{"id":3190,"date":"2025-06-19T13:48:10","date_gmt":"2025-06-19T06:48:10","guid":{"rendered":"https:\/\/k-chem.vn\/?p=3190"},"modified":"2025-07-29T17:37:29","modified_gmt":"2025-07-29T10:37:29","slug":"ma-cas-la-gi","status":"publish","type":"post","link":"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/","title":{"rendered":"M\u00e3 CAS h\u00f3a ch\u1ea5t l\u00e0 g\u00ec? C\u00e1ch \u0111\u0103ng k\u00fd v\u00e0 tra c\u1ee9u \u0111\u0103ng k\u00fd CAS hi\u1ec7u qu\u1ea3"},"content":{"rendered":"<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">M\u00e3 CAS (Chemical Abstracts Service) l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng gi\u00fap \u0111\u1ecbnh danh v\u00e0 qu\u1ea3n l\u00fd h\u00f3a ch\u1ea5t tr\u00ean to\u00e0n c\u1ea7u, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nghi\u00ean c\u1ee9u, c\u00f4ng nghi\u1ec7p v\u00e0 th\u01b0\u01a1ng m\u1ea1i. V\u1edbi vai tr\u00f2 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c v\u00e0 th\u1ed1ng nh\u1ea5t khi x\u00e1c \u0111\u1ecbnh c\u00e1c ch\u1ea5t h\u00f3a h\u1ecdc, m\u00e3 CAS h\u1ed7 tr\u1ee3 doanh nghi\u1ec7p, nh\u00e0 khoa h\u1ecdc v\u00e0 c\u01a1 quan qu\u1ea3n l\u00fd d\u1ec5 d\u00e0ng tra c\u1ee9u, khai b\u00e1o v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh ph\u00e1p lu\u1eadt. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft v\u1ec1 m\u00e3 CAS, c\u00e1ch \u0111\u0103ng k\u00fd, khai b\u00e1o v\u00e0 tra c\u1ee9u hi\u1ec7u qu\u1ea3, \u0111\u1eb7c bi\u1ec7t trong b\u1ed1i c\u1ea3nh quy \u0111\u1ecbnh t\u1ea1i Vi\u1ec7t Nam.<\/span><\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_73 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">M\u1ee4C L\u1ee4C<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Ma_CAS_la_gi\" title=\"M\u00e3 CAS l\u00e0 g\u00ec?\">M\u00e3 CAS l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Cach_doc_ma_CAS_dung\" title=\"C\u00e1ch \u0111\u1ecdc m\u00e3 CAS \u0111\u00fang\">C\u00e1ch \u0111\u1ecdc m\u00e3 CAS \u0111\u00fang<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Nhung_hoa_chat_nao_can_phai_co_so_CAS\" title=\"Nh\u1eefng h\u00f3a ch\u1ea5t n\u00e0o c\u1ea7n ph\u1ea3i c\u00f3 s\u1ed1 CAS?\">Nh\u1eefng h\u00f3a ch\u1ea5t n\u00e0o c\u1ea7n ph\u1ea3i c\u00f3 s\u1ed1 CAS?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Quy_trinh_dang_ky_ma_CAS\" title=\"Quy tr\u00ecnh \u0111\u0103ng k\u00fd m\u00e3 CAS\">Quy tr\u00ecnh \u0111\u0103ng k\u00fd m\u00e3 CAS<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_1_Xac_dinh_chat_hoa_hoc_moi\" title=\"B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh ch\u1ea5t h\u00f3a h\u1ecdc m\u1edbi\">B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh ch\u1ea5t h\u00f3a h\u1ecdc m\u1edbi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_2_Chuan_bi_thong_tin\" title=\"B\u01b0\u1edbc 2: Chu\u1ea9n b\u1ecb th\u00f4ng tin\">B\u01b0\u1edbc 2: Chu\u1ea9n b\u1ecb th\u00f4ng tin<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_3_Gui_yeu_cau_den_CAS\" title=\"B\u01b0\u1edbc 3: G\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn CAS\">B\u01b0\u1edbc 3: G\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn CAS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_4_Thanh_toan_phi\" title=\"B\u01b0\u1edbc 4: Thanh to\u00e1n ph\u00ed\">B\u01b0\u1edbc 4: Thanh to\u00e1n ph\u00ed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_5_Nhan_ma_CAS_cua_hoa_chat\" title=\"B\u01b0\u1edbc 5: Nh\u1eadn m\u00e3 CAS c\u1ee7a h\u00f3a ch\u1ea5t\">B\u01b0\u1edbc 5: Nh\u1eadn m\u00e3 CAS c\u1ee7a h\u00f3a ch\u1ea5t<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Huong_dan_cach_khai_bao_ma_CAS\" title=\"H\u01b0\u1edbng d\u1eabn c\u00e1ch khai b\u00e1o m\u00e3 CAS\">H\u01b0\u1edbng d\u1eabn c\u00e1ch khai b\u00e1o m\u00e3 CAS<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_1_Kiem_tra_ma_CAS\" title=\"B\u01b0\u1edbc 1: Ki\u1ec3m tra m\u00e3 CAS\">B\u01b0\u1edbc 1: Ki\u1ec3m tra m\u00e3 CAS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_2_Kiem_tra_danh_muc_hoa_chat_phai_khai_bao\" title=\"B\u01b0\u1edbc 2: Ki\u1ec3m tra danh m\u1ee5c h\u00f3a ch\u1ea5t ph\u1ea3i khai b\u00e1o\">B\u01b0\u1edbc 2: Ki\u1ec3m tra danh m\u1ee5c h\u00f3a ch\u1ea5t ph\u1ea3i khai b\u00e1o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_3_Chuan_bi_ho_so_khai_bao\" title=\"B\u01b0\u1edbc 3: Chu\u1ea9n b\u1ecb h\u1ed3 s\u01a1 khai b\u00e1o\">B\u01b0\u1edbc 3: Chu\u1ea9n b\u1ecb h\u1ed3 s\u01a1 khai b\u00e1o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_4_Nop_ho_so_qua_Cong_thong_tin_mot_cua_quoc_gia\" title=\"B\u01b0\u1edbc 4: N\u1ed9p h\u1ed3 s\u01a1 qua C\u1ed5ng th\u00f4ng tin m\u1ed9t c\u1eeda qu\u1ed1c gia\">B\u01b0\u1edbc 4: N\u1ed9p h\u1ed3 s\u01a1 qua C\u1ed5ng th\u00f4ng tin m\u1ed9t c\u1eeda qu\u1ed1c gia<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_5_Ky_va_gui_ho_so\" title=\"B\u01b0\u1edbc 5: K\u00fd v\u00e0 g\u1eedi h\u1ed3 s\u01a1\">B\u01b0\u1edbc 5: K\u00fd v\u00e0 g\u1eedi h\u1ed3 s\u01a1<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Cach_tra_cuu_so_dang_ky_CAS\" title=\"C\u00e1ch tra c\u1ee9u s\u1ed1 \u0111\u0103ng k\u00fd CAS\">C\u00e1ch tra c\u1ee9u s\u1ed1 \u0111\u0103ng k\u00fd CAS<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_1_Su_dung_cac_co_so_du_lieu_tra_cuu_ma_CAS_truc_tuyen\" title=\"B\u01b0\u1edbc 1: S\u1eed d\u1ee5ng c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u tra c\u1ee9u m\u00e3 CAS tr\u1ef1c tuy\u1ebfn\">B\u01b0\u1edbc 1: S\u1eed d\u1ee5ng c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u tra c\u1ee9u m\u00e3 CAS tr\u1ef1c tuy\u1ebfn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_2_Nhap_ten_hoa_chat_hoac_cong_thuc\" title=\"B\u01b0\u1edbc 2: Nh\u1eadp t\u00ean h\u00f3a ch\u1ea5t ho\u1eb7c c\u00f4ng th\u1ee9c\">B\u01b0\u1edbc 2: Nh\u1eadp t\u00ean h\u00f3a ch\u1ea5t ho\u1eb7c c\u00f4ng th\u1ee9c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_3_Bam_%E2%80%9CTim_kiem%E2%80%9D\" title=\"B\u01b0\u1edbc 3: B\u1ea5m \u201cT\u00ecm ki\u1ebfm\u201d\">B\u01b0\u1edbc 3: B\u1ea5m \u201cT\u00ecm ki\u1ebfm\u201d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Buoc_4_Xem_ket_qua\" title=\"B\u01b0\u1edbc 4: Xem k\u1ebft qu\u1ea3\">B\u01b0\u1edbc 4: Xem k\u1ebft qu\u1ea3<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Cau_hoi_thuong_gap_ve_CAS\" title=\"C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 CAS\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 CAS<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Dang_ky_ma_CAS_o_dau\" title=\"\u0110\u0103ng k\u00fd m\u00e3 CAS \u1edf \u0111\u00e2u?\">\u0110\u0103ng k\u00fd m\u00e3 CAS \u1edf \u0111\u00e2u?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Ma_so_CAS_co_the_thay_doi_khong\" title=\"M\u00e3 s\u1ed1 CAS c\u00f3 th\u1ec3 thay \u0111\u1ed5i kh\u00f4ng?\">M\u00e3 s\u1ed1 CAS c\u00f3 th\u1ec3 thay \u0111\u1ed5i kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Doanh_nghiep_co_the_tu_tao_ma_CAS_rieng_duoc_khong\" title=\"Doanh nghi\u1ec7p c\u00f3 th\u1ec3 t\u1ef1 t\u1ea1o m\u00e3 CAS ri\u00eang \u0111\u01b0\u1ee3c kh\u00f4ng?\">Doanh nghi\u1ec7p c\u00f3 th\u1ec3 t\u1ef1 t\u1ea1o m\u00e3 CAS ri\u00eang \u0111\u01b0\u1ee3c kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Ma_so_CAS_co_lien_quan_gi_den_do_nguy_hiem_cua_mot_chat\" title=\"M\u00e3 s\u1ed1 CAS c\u00f3 li\u00ean quan g\u00ec \u0111\u1ebfn \u0111\u1ed9 nguy hi\u1ec3m c\u1ee7a m\u1ed9t ch\u1ea5t?\">M\u00e3 s\u1ed1 CAS c\u00f3 li\u00ean quan g\u00ec \u0111\u1ebfn \u0111\u1ed9 nguy hi\u1ec3m c\u1ee7a m\u1ed9t ch\u1ea5t?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/k-chem.vn\/vi\/ma-cas-la-gi\/#Khong_khai_bao_ma_so_CAS_thi_co_sao_khong\" title=\"Kh\u00f4ng khai b\u00e1o m\u00e3 s\u1ed1 CAS th\u00ec c\u00f3 sao kh\u00f4ng?\">Kh\u00f4ng khai b\u00e1o m\u00e3 s\u1ed1 CAS th\u00ec c\u00f3 sao kh\u00f4ng?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<h2><span class=\"ez-toc-section\" id=\"Ma_CAS_la_gi\"><\/span>M\u00e3 CAS l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">M\u00e3 CAS (t\u00ean ti\u1ebfng Anh: Chemical Abstracts Service) l\u00e0 m\u1ed9t d\u00e3y s\u1ed1 duy nh\u1ea5t \u0111\u01b0\u1ee3c g\u00e1n cho m\u1ed7i ch\u1ea5t h\u00f3a h\u1ecdc, h\u1ee3p ch\u1ea5t, polymer, h\u1ed7n h\u1ee3p, ho\u1eb7c protein b\u1edfi Chemical Abstracts Service, m\u1ed9t b\u1ed9 ph\u1eadn thu\u1ed9c Hi\u1ec7p h\u1ed9i H\u00f3a h\u1ecdc Hoa K\u1ef3 (<\/span><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.acs.org\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">American Chemical Society &#8211; ACS<\/span><\/a><\/span><span style=\"font-weight: 400;\">). M\u00e3 CAS gi\u00fap \u0111\u1ecbnh danh ch\u00ednh x\u00e1c m\u1ed9t ch\u1ea5t h\u00f3a h\u1ecdc, tr\u00e1nh nh\u1ea7m l\u1eabn do c\u00e1c t\u00ean g\u1ecdi kh\u00e1c nhau (v\u00ed d\u1ee5: ethanol c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 r\u01b0\u1ee3u c\u1ed3n, ethyl hydrate, nh\u01b0ng m\u00e3 CAS l\u00e0 64-17-5). <\/span><span style=\"font-weight: 400;\">Hi\u1ec7n nay, m\u00e3 n\u00e0y \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Nghi\u00ean c\u1ee9u:<\/strong> M\u00e3 CAS gi\u00fap tra c\u1ee9u nhanh th\u00f4ng tin h\u00f3a ch\u1ea5t, h\u1ed7 tr\u1ee3 qu\u00e1 tr\u00ecnh ph\u00e2n t\u00edch v\u00e0 ph\u00e1t tri\u1ec3n s\u1ea3n ph\u1ea9m m\u1edbi.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>S\u1ea3n xu\u1ea5t:<\/strong> Gi\u00fap qu\u1ea3n l\u00fd nguy\u00ean li\u1ec7u v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng hi\u1ec7u qu\u1ea3<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Qu\u1ea3n l\u00fd h\u00f3a ch\u1ea5t:<\/strong> M\u00e3 CAS \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c theo d\u00f5i v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n h\u00f3a ch\u1ea5t \u0111\u1ed1i v\u1edbi con ng\u01b0\u1eddi v\u00e0 m\u00f4i tr\u01b0\u1eddng. <\/span><\/li>\n<\/ul>\n<p><strong>&gt;&gt; Xem th\u00eam:<\/strong> <a href=\"https:\/\/k-chem.vn\/vi\/dung-moi-huu-co\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">Dung m\u00f4i h\u1eefu c\u01a1 l\u00e0 g\u00ec<\/span><\/a>? Ph\u00e2n lo\u1ea1i dung m\u00f4i h\u1eefu c\u01a1 ph\u1ed5 bi\u1ebfn v\u00e0 \u1ee9ng d\u1ee5ng<\/p>\n<figure id=\"attachment_3205\" aria-describedby=\"caption-attachment-3205\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3205\" src=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/cas-la-gi.png\" alt=\"cas l\u00e0 g\u00ec\" width=\"800\" height=\"440\" srcset=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/cas-la-gi.png 800w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/cas-la-gi-300x165.png 300w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/cas-la-gi-768x422.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-3205\" class=\"wp-caption-text\">M\u00e3 s\u1ed1 cas h\u00f3a ch\u1ea5t l\u00e0 g\u00ec? M\u00e3 Chemical Abstracts Service l\u00e0 m\u1ed9t d\u00e3y s\u1ed1 duy nh\u1ea5t \u0111\u01b0\u1ee3c g\u00e1n cho m\u1ed7i ch\u1ea5t h\u00f3a h\u1ecdc, h\u1ee3p ch\u1ea5t,&#8230; (Ngu\u1ed3n: S\u01b0u t\u1ea7m)<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Cach_doc_ma_CAS_dung\"><\/span>C\u00e1ch \u0111\u1ecdc m\u00e3 CAS \u0111\u00fang<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Ngo\u00e0i c\u00e1c hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 kh\u00e1i ni\u1ec7m &#8220;M\u00e3 CAS trong h\u00f3a ch\u1ea5t l\u00e0 g\u00ec&#8221;. M\u00e3 CAS kh\u00f4ng mang \u00fd ngh\u0129a h\u00f3a h\u1ecdc hay c\u1ea5u tr\u00fac ph\u00e2n t\u1eed, m\u00e0 ch\u1ec9 l\u00e0 m\u1ed9t \u0111\u1ecbnh danh duy nh\u1ea5t. <\/span><span style=\"font-weight: 400;\">S\u1ed1 \u0111\u0103ng k\u00fd CAS bao g\u1ed3m t\u1ed1i \u0111a 10 ch\u1eef s\u1ed1, \u0111\u01b0\u1ee3c chia th\u00e0nh 3 nh\u00f3m v\u00e0 ph\u00e2n t\u00e1ch b\u1eb1ng d\u1ea5u g\u1ea1ch ngang. Ph\u1ea7n \u0111\u1ea7u ti\u00ean (t\u00ednh t\u1eeb b\u00ean tr\u00e1i) c\u00f3 t\u1eeb 2 \u0111\u1ebfn 7 ch\u1eef s\u1ed1; ph\u1ea7n th\u1ee9 hai c\u00f3 2 ch\u1eef s\u1ed1 v\u00e0 ph\u1ea7n cu\u1ed1i c\u00f9ng l\u00e0 m\u1ed9t ch\u1eef s\u1ed1 ki\u1ec3m tra duy nh\u1ea5t.<\/span><\/p>\n<figure id=\"attachment_3199\" aria-describedby=\"caption-attachment-3199\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3199\" src=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-5.png\" alt=\"m\u00e3 cas l\u00e0 g\u00ec\" width=\"800\" height=\"533\" srcset=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-5.png 800w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-5-300x200.png 300w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-5-768x512.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-3199\" class=\"wp-caption-text\">S\u1ed1 \u0111\u0103ng k\u00fd CAS bao g\u1ed3m t\u1ed1i \u0111a 10 ch\u1eef s\u1ed1, \u0111\u01b0\u1ee3c chia th\u00e0nh 3 nh\u00f3m v\u00e0 ph\u00e2n t\u00e1ch b\u1eb1ng d\u1ea5u g\u1ea1ch ngang (Ngu\u1ed3n: S\u01b0u t\u1ea7m)<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u0110\u1ec3 \u0111\u1ecdc v\u00e0 ki\u1ec3m tra t\u00ednh ch\u00ednh x\u00e1c c\u1ee7a m\u00e3 CAS, b\u1ea1n c\u1ea7n hi\u1ec3u c\u00e1ch t\u00ednh s\u1ed1 ki\u1ec3m tra:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u00e1ch t\u00ednh s\u1ed1 ki\u1ec3m tra<\/b><span style=\"font-weight: 400;\">:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u0110\u1ecdc c\u00e1c ch\u1eef s\u1ed1 t\u1eeb ph\u1ea3i sang tr\u00e1i (kh\u00f4ng t\u00ednh s\u1ed1 ki\u1ec3m tra), g\u00e1n tr\u1ecdng s\u1ed1 t\u0103ng d\u1ea7n t\u1eeb 1, 2, 3, &#8230;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Nh\u00e2n m\u1ed7i ch\u1eef s\u1ed1 v\u1edbi tr\u1ecdng s\u1ed1 t\u01b0\u01a1ng \u1ee9ng, sau \u0111\u00f3 c\u1ed9ng t\u1ea5t c\u1ea3 k\u1ebft qu\u1ea3.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">L\u1ea5y t\u1ed5ng chia cho 10, ph\u1ea7n d\u01b0 ch\u00ednh l\u00e0 s\u1ed1 ki\u1ec3m tra.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>V\u00ed d\u1ee5<\/b><span style=\"font-weight: 400;\">: M\u00e3 CAS c\u1ee7a <a href=\"https:\/\/k-chem.vn\/vi\/dung-moi\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">dung m\u00f4i<\/span><\/a> Dimethyl Carbonate (DMC) l\u00e0: 616-38-6<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\">C\u00e1c ch\u1eef s\u1ed1 (tr\u1eeb s\u1ed1 ki\u1ec3m tra 6): 8, 3, 6, 1, 6.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\">G\u00e1n tr\u1ecdng s\u1ed1 t\u1eeb ph\u1ea3i sang tr\u00e1i: 1, 2, 3, 4, 5.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\">T\u00ednh:\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\">(8\u00d71) + (3\u00d72) + (6\u00d73) + (1\u00d74) + (6\u00d75) = 8 + 6 + 18 + 4 + 30 = 66.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\">66 chia 10, d\u01b0 5 \u2192 S\u1ed1 ki\u1ec3m tra l\u00e0 6, \u0111\u00fang v\u1edbi m\u00e3 CAS.<\/li>\n<\/ul>\n<\/li>\n<li>Khi \u0111\u1ecdc, b\u1ea1n ch\u1ec9 c\u1ea7n n\u00eau d\u00e3y s\u1ed1 theo th\u1ee9 t\u1ef1, v\u00ed d\u1ee5: &#8220;616-38-6&#8221; \u0111\u1ecdc l\u00e0 &#8220;s\u00e1u m\u1ed9t s\u00e1u, ba t\u00e1m, s\u00e1u&#8221;.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Nhung_hoa_chat_nao_can_phai_co_so_CAS\"><\/span>Nh\u1eefng h\u00f3a ch\u1ea5t n\u00e0o c\u1ea7n ph\u1ea3i c\u00f3 s\u1ed1 CAS?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">H\u1ea7u h\u1ebft c\u00e1c ch\u1ea5t h\u00f3a h\u1ecdc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00f4ng nghi\u1ec7p, nghi\u00ean c\u1ee9u, ho\u1eb7c th\u01b0\u01a1ng m\u1ea1i \u0111\u1ec1u \u0111\u01b0\u1ee3c g\u00e1n m\u00e3 CAS \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00e0 \u0111\u1ecbnh danh. C\u1ee5 th\u1ec3:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">\u0110\u01a1n ch\u1ea5t, h\u1ee3p ch\u1ea5t, h\u1ed7n h\u1ee3p, polymer, protein, enzym, ch\u1ea5t h\u1eefu c\u01a1, v.v.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">C\u00e1c <a href=\"https:\/\/k-chem.vn\/vi\/hoa-chat-cong-nghiep\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">h\u00f3a ch\u1ea5t c\u00f4ng nghi\u1ec7p<\/span><\/a>, y t\u1ebf, n\u00f4ng nghi\u1ec7p, ho\u1eb7c d\u00f9ng trong s\u1ea3n xu\u1ea5t.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-weight: 400;\">H\u00f3a ch\u1ea5t thu\u1ed9c danh m\u1ee5c ph\u1ea3i khai b\u00e1o theo quy \u0111\u1ecbnh ph\u00e1p lu\u1eadt (Ph\u1ee5 l\u1ee5c V, <\/span><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/datafiles.chinhphu.vn\/cpp\/files\/vbpq\/2017\/10\/113.signed.pdf\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">Ngh\u1ecb \u0111\u1ecbnh 113\/2017\/N\u0110-CP<\/span><\/a><\/span><span style=\"font-weight: 400;\"> t\u1ea1i Vi\u1ec7t Nam, bao g\u1ed3m 1156 ch\u1ea5t).<\/span><\/li>\n<\/ul>\n<table style=\"width: 100%; border-collapse: collapse;\" border=\"2\">\n<tbody>\n<tr>\n<td style=\"width: 100%;\"><b>Tr\u01b0\u1eddng h\u1ee3p kh\u00f4ng c\u1ea7n khai b\u00e1o m\u00e3 CAS<\/b><span style=\"font-weight: 400;\"> (theo quy \u0111\u1ecbnh Vi\u1ec7t Nam):<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">H\u00f3a ch\u1ea5t nh\u1eadp kh\u1ea9u d\u01b0\u1edbi 10 kg\/l\u1ea7n (tr\u1eeb h\u00f3a ch\u1ea5t h\u1ea1n ch\u1ebf s\u1ea3n xu\u1ea5t, kinh doanh).<\/span><\/li>\n<li><span style=\"font-weight: 400;\">H\u00f3a ch\u1ea5t ph\u1ee5c v\u1ee5 an ninh, qu\u1ed1c ph\u00f2ng, \u1ee9ng ph\u00f3 thi\u00ean tai, d\u1ecbch b\u1ec7nh.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">H\u00f3a ch\u1ea5t l\u00e0 ti\u1ec1n ch\u1ea5t ma t\u00fay, thu\u1ed1c n\u1ed5, ho\u1eb7c v\u1eadt li\u1ec7u n\u1ed5 c\u00f4ng nghi\u1ec7p \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e9p.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Nguy\u00ean li\u1ec7u s\u1ea3n xu\u1ea5t thu\u1ed1c \u0111\u00e3 c\u00f3 gi\u1ea5y ch\u1ee9ng nh\u1eadn l\u01b0u h\u00e0nh t\u1ea1i Vi\u1ec7t Nam.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">N\u1ebfu m\u00e3 CAS c\u1ee7a h\u00f3a ch\u1ea5t kh\u00f4ng n\u1eb1m trong danh m\u1ee5c b\u1eaft bu\u1ed9c khai b\u00e1o (Ph\u1ee5 l\u1ee5c V), doanh nghi\u1ec7p c\u00f3 th\u1ec3 nh\u1eadp kh\u1ea9u nh\u01b0 h\u00e0ng h\u00f3a th\u00f4ng th\u01b0\u1eddng m\u00e0 kh\u00f4ng c\u1ea7n khai b\u00e1o.<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Quy_trinh_dang_ky_ma_CAS\"><\/span>Quy tr\u00ecnh \u0111\u0103ng k\u00fd m\u00e3 CAS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u0110\u1ec3 \u0111\u0103ng k\u00fd m\u00e3 CAS cho m\u1ed9t ch\u1ea5t h\u00f3a h\u1ecdc m\u1edbi, t\u1ed5 ch\u1ee9c c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_1_Xac_dinh_chat_hoa_hoc_moi\"><\/span>B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh ch\u1ea5t h\u00f3a h\u1ecdc m\u1edbi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">X\u00e1c minh r\u1eb1ng ch\u1ea5t h\u00f3a h\u1ecdc ch\u01b0a \u0111\u01b0\u1ee3c g\u00e1n m\u00e3 CAS. Tra c\u1ee9u tr\u00ean:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>CAS REGISTRY<\/b><span style=\"font-weight: 400;\"> (truy c\u1eadp qua SciFinder ho\u1eb7c STN, y\u00eau c\u1ea7u t\u00e0i kho\u1ea3n tr\u1ea3 ph\u00ed).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">C\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00f4ng khai nh\u01b0 <\/span><b>PubChem<\/b><span style=\"font-weight: 400;\"> (<\/span><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/pubchem.ncbi.nlm.nih.gov\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">https:\/\/pubchem.ncbi.nlm.nih.gov<\/span><\/a><\/span><span style=\"font-weight: 400;\">) ho\u1eb7c <\/span><b>ChemSpider<\/b><span style=\"font-weight: 400;\"> (<\/span><a href=\"https:\/\/www.chemspider.com\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\"><span style=\"color: #0000ff;\">https:\/\/www.chemspider.com<\/span><\/span><\/a><span style=\"font-weight: 400;\">).<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">N\u1ebfu ch\u1ea5t \u0111\u00e3 c\u00f3 m\u00e3 CAS, kh\u00f4ng c\u1ea7n \u0111\u0103ng k\u00fd l\u1ea1i.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_2_Chuan_bi_thong_tin\"><\/span>B\u01b0\u1edbc 2: Chu\u1ea9n b\u1ecb th\u00f4ng tin<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">T\u1ed5 ch\u1ee9c c\u1ea7n cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft v\u1ec1 ch\u1ea5t h\u00f3a h\u1ecdc, gi\u00fap CAS x\u00e1c \u0111\u1ecbnh ch\u1ea5t l\u00e0 duy nh\u1ea5t v\u00e0 kh\u00f4ng tr\u00f9ng l\u1eb7p, bao g\u1ed3m:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u1ea5u tr\u00fac h\u00f3a h\u1ecdc<\/b><span style=\"font-weight: 400;\">: C\u00f4ng th\u1ee9c ph\u00e2n t\u1eed, c\u1ea5u tr\u00fac 2D\/3D (n\u1ebfu c\u00f3).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u00ean h\u00f3a h\u1ecdc<\/b><span style=\"font-weight: 400;\">: Theo quy t\u1eafc IUPAC ho\u1eb7c t\u00ean th\u00f4ng th\u01b0\u1eddng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc<\/b><span style=\"font-weight: 400;\">: \u0110i\u1ec3m n\u00f3ng ch\u1ea3y, \u0111i\u1ec3m s\u00f4i, \u0111\u1ed9 h\u00f2a tan, v.v. (n\u1ebfu bi\u1ebft).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>M\u00f4 t\u1ea3 quy tr\u00ecnh t\u1ed5ng h\u1ee3p<\/b><span style=\"font-weight: 400;\"> (khuy\u1ebfn kh\u00edch, nh\u01b0ng kh\u00f4ng b\u1eaft bu\u1ed9c).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>D\u1eef li\u1ec7u ph\u00e2n t\u00edch<\/b><span style=\"font-weight: 400;\">: Quang ph\u1ed5 (NMR, IR, MS), s\u1eafc k\u00fd, v.v., \u0111\u1ec3 x\u00e1c minh c\u1ea5u tr\u00fac.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_3_Gui_yeu_cau_den_CAS\"><\/span>B\u01b0\u1edbc 3: G\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn CAS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>N\u1ed9p \u0111\u01a1n \u0111\u0103ng k\u00fd<\/b><span style=\"font-weight: 400;\">:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Truy c\u1eadp d\u1ecbch v\u1ee5 <\/span><b>CAS Registry Number Assignment<\/b><span style=\"font-weight: 400;\"> tr\u00ean trang web CAS.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">\u0110i\u1ec1n bi\u1ec3u m\u1eabu tr\u1ef1c tuy\u1ebfn ho\u1eb7c g\u1eedi th\u00f4ng tin qua email\/fax theo h\u01b0\u1edbng d\u1eabn.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>H\u00ecnh th\u1ee9c cung c\u1ea5p th\u00f4ng tin<\/b><span style=\"font-weight: 400;\">:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 g\u1eedi d\u1eef li\u1ec7u c\u1ea5u tr\u00fac qua ph\u1ea7n m\u1ec1m nh\u01b0 ChemDraw, Molfile, ho\u1eb7c \u0111\u1ecbnh d\u1ea1ng t\u01b0\u01a1ng th\u00edch.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">N\u1ebfu ch\u1ea5t ph\u1ee9c t\u1ea1p (nh\u01b0 polymer, protein), c\u1ea7n trao \u0111\u1ed5i tr\u1ef1c ti\u1ebfp v\u1edbi CAS \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u01b0\u1edbng d\u1eabn c\u1ee5 th\u1ec3.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>B\u1ea3o m\u1eadt<\/b><span style=\"font-weight: 400;\">: N\u1ebfu ch\u1ea5t l\u00e0 b\u00ed m\u1eadt th\u01b0\u01a1ng m\u1ea1i, CAS cung c\u1ea5p t\u00f9y ch\u1ecdn <\/span><b>b\u1ea3o m\u1eadt th\u00f4ng tin<\/b><span style=\"font-weight: 400;\"> (Confidential Registry Number). Tuy nhi\u00ean, m\u00e3 CAS v\u1eabn s\u1ebd \u0111\u01b0\u1ee3c c\u1ea5p v\u00e0 l\u01b0u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u, nh\u01b0ng th\u00f4ng tin chi ti\u1ebft ch\u1ec9 \u0111\u01b0\u1ee3c ti\u1ebft l\u1ed9 v\u1edbi s\u1ef1 cho ph\u00e9p c\u1ee7a t\u1ed5 ch\u1ee9c.<\/span><\/li>\n<\/ul>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Th\u1eddi gian x\u1eed l\u00fd<\/b><span style=\"font-weight: 400;\">: C\u00f3 th\u1ec3 m\u1ea5t v\u00e0i tu\u1ea7n n\u1ebfu ch\u1ea5t ph\u1ee9c t\u1ea1p ho\u1eb7c c\u1ea7n x\u00e1c minh th\u00eam. N\u1ebfu c\u1ea7n g\u1ea5p, b\u1ea1n c\u00f3 th\u1ec3 y\u00eau c\u1ea7u d\u1ecbch v\u1ee5 \u01b0u ti\u00ean (c\u00f3 ph\u1ee5 ph\u00ed).<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_4_Thanh_toan_phi\"><\/span>B\u01b0\u1edbc 4: Thanh to\u00e1n ph\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u0103ng k\u00fd m\u00e3 CAS th\u01b0\u1eddng <\/span><b>c\u00f3 ph\u00ed<\/b><span style=\"font-weight: 400;\">, t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i ch\u1ea5t v\u00e0 y\u00eau c\u1ea7u (v\u00ed d\u1ee5: ch\u1ea5t \u0111\u01a1n gi\u1ea3n, polymer, ho\u1eb7c ch\u1ea5t b\u00ed m\u1eadt th\u01b0\u01a1ng m\u1ea1i).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">CAS kh\u00f4ng c\u00f4ng khai m\u1ee9c ph\u00ed c\u1ee5 th\u1ec3 tr\u00ean website, nh\u01b0ng th\u01b0\u1eddng dao \u0111\u1ed9ng t\u1eeb v\u00e0i tr\u0103m \u0111\u1ebfn v\u00e0i ngh\u00ecn USD, t\u00f9y tr\u01b0\u1eddng h\u1ee3p.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Li\u00ean h\u1ec7 CAS \u0111\u1ec3 nh\u1eadn b\u00e1o gi\u00e1 ch\u00ednh x\u00e1c qua <\/span><b>help@cas.org<\/b><span style=\"font-weight: 400;\"> ho\u1eb7c s\u1ed1 \u0111i\u1ec7n tho\u1ea1i h\u1ed7 tr\u1ee3.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_5_Nhan_ma_CAS_cua_hoa_chat\"><\/span>B\u01b0\u1edbc 5: Nh\u1eadn m\u00e3 CAS c\u1ee7a h\u00f3a ch\u1ea5t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sau khi x\u1eed l\u00fd (th\u01b0\u1eddng m\u1ea5t v\u00e0i ng\u00e0y \u0111\u1ebfn v\u00e0i tu\u1ea7n, t\u00f9y m\u1ee9c \u0111\u1ed9 ph\u1ee9c t\u1ea1p), CAS s\u1ebd cung c\u1ea5p:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>M\u00e3 CAS<\/b><span style=\"font-weight: 400;\"> ch\u00ednh th\u1ee9c (d\u1ea1ng xxxxxxx-yy-z).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Th\u00f4ng tin x\u00e1c nh\u1eadn v\u1ec1 ch\u1ea5t h\u00f3a h\u1ecdc \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o <\/span><b>CAS REGISTRY<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">M\u00e3 CAS n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c t\u00e0i li\u1ec7u, MSDS, h\u1ed3 s\u01a1 khai b\u00e1o h\u1ea3i quan, ho\u1eb7c th\u01b0\u01a1ng m\u1ea1i h\u00f3a s\u1ea3n ph\u1ea9m.<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_3193\" aria-describedby=\"caption-attachment-3193\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3193\" src=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-1.png\" alt=\"m\u00e3 cas ho\u00e1 ch\u1ea5t\" width=\"800\" height=\"533\" srcset=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-1.png 800w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-1-300x200.png 300w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-1-768x512.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-3193\" class=\"wp-caption-text\">X\u00e1c minh r\u1eb1ng ch\u1ea5t h\u00f3a h\u1ecdc ch\u01b0a \u0111\u01b0\u1ee3c g\u00e1n m\u00e3 CAS tr\u01b0\u1edbc khi \u0111\u0103ng k\u00fd m\u00e3 CAS (Ngu\u1ed3n: S\u01b0u t\u1ea7m)<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Huong_dan_cach_khai_bao_ma_CAS\"><\/span>H\u01b0\u1edbng d\u1eabn c\u00e1ch khai b\u00e1o m\u00e3 CAS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">T\u1ea1i Vi\u1ec7t Nam, vi\u1ec7c khai b\u00e1o m\u00e3 CAS l\u00e0 y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi c\u00e1c h\u00f3a ch\u1ea5t thu\u1ed9c danh m\u1ee5c ph\u1ea3i khai b\u00e1o khi nh\u1eadp kh\u1ea9u, theo Ngh\u1ecb \u0111\u1ecbnh <a href=\"https:\/\/datafiles.chinhphu.vn\/cpp\/files\/vbpq\/2017\/10\/113.signed.pdf\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"color: #0000ff;\">113\/2017\/N\u0110-CP<\/span><\/a> v\u00e0 C\u00f4ng v\u0103n <a href=\"https:\/\/thuvienphapluat.vn\/cong-van\/Xuat-nhap-khau\/Cong-van-1850-HQTPHCM-GSQL-2022-khai-bao-ma-CAS-Cuc-Hai-quan-Ho-Chi-Minh-524616.aspx\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"color: #0000ff;\">1850\/HQTPHCM-GSQL<\/span><\/a> n\u0103m 2022. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn chi ti\u1ebft:<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_1_Kiem_tra_ma_CAS\"><\/span>B\u01b0\u1edbc 1: Ki\u1ec3m tra m\u00e3 CAS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">X\u00e1c \u0111\u1ecbnh th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 m\u00e3 CAS t\u01b0\u01a1ng \u1ee9ng (th\u01b0\u1eddng c\u00f3 trong <\/span><b>MSDS &#8211; Material Safety Data Sheet<\/b><span style=\"font-weight: 400;\"> ho\u1eb7c t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tra c\u1ee9u m\u00e3 CAS tr\u00ean H\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u h\u00f3a ch\u1ea5t qu\u1ed1c gia:<\/span> <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/chemicaldata.gov.vn\" target=\"_blank\" rel=\"nofollow noopener\">http:\/\/chemicaldata.gov.vn<\/a><\/span><span style=\"font-weight: 400;\"> ho\u1eb7c c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u qu\u1ed1c t\u1ebf nh\u01b0 PubChem, ChemSpider.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_2_Kiem_tra_danh_muc_hoa_chat_phai_khai_bao\"><\/span>B\u01b0\u1edbc 2: Ki\u1ec3m tra danh m\u1ee5c h\u00f3a ch\u1ea5t ph\u1ea3i khai b\u00e1o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u1ed1i chi\u1ebfu m\u00e3 CAS v\u1edbi <\/span><b>Ph\u1ee5 l\u1ee5c V, Ngh\u1ecb \u0111\u1ecbnh 113\/2017\/N\u0110-CP<\/b><span style=\"font-weight: 400;\"> (s\u1eeda \u0111\u1ed5i b\u1edfi Ngh\u1ecb \u0111\u1ecbnh 82\/2022\/N\u0110-CP) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh h\u00f3a ch\u1ea5t c\u00f3 thu\u1ed9c danh m\u1ee5c b\u1eaft bu\u1ed9c khai b\u00e1o hay kh\u00f4ng.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_3_Chuan_bi_ho_so_khai_bao\"><\/span>B\u01b0\u1edbc 3: Chu\u1ea9n b\u1ecb h\u1ed3 s\u01a1 khai b\u00e1o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">H\u1ed3 s\u01a1 bao g\u1ed3m:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u1edd khai h\u1ea3i quan<\/b><span style=\"font-weight: 400;\"> (m\u1eabu s\u1ed1 01 ho\u1eb7c 02, theo Th\u00f4ng t\u01b0 38\/2015\/TT-BTC, s\u1eeda \u0111\u1ed5i b\u1edfi Th\u00f4ng t\u01b0 <a href=\"https:\/\/datafiles.chinhphu.vn\/cpp\/files\/vbpq\/2018\/06\/39-btc.pdf\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"color: #0000ff;\">39\/2018\/TT-BTC<\/span><\/a>).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>H\u00f3a \u0111\u01a1n th\u01b0\u01a1ng m\u1ea1i<\/b><span style=\"font-weight: 400;\"> (Commercial Invoice) ho\u1eb7c gi\u1ea5y th\u00f4ng b\u00e1o h\u00e0ng \u0111\u1ebfn (D\/O) \u0111\u1ed1i v\u1edbi h\u00e0ng phi th\u01b0\u01a1ng m\u1ea1i.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>MSDS<\/b><span style=\"font-weight: 400;\"> (B\u1ea3ng ch\u1ec9 d\u1eabn an to\u00e0n h\u00f3a ch\u1ea5t) c\u00f3 ghi m\u00e3 CAS.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>H\u1ee3p \u0111\u1ed3ng mua b\u00e1n<\/b><span style=\"font-weight: 400;\">, ch\u1ee9ng t\u1eeb k\u1ef9 thu\u1eadt (n\u1ebfu c\u1ea7n).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e1c ch\u1ee9ng t\u1eeb c\u00f3 th\u1ec3 \u1edf d\u1ea1ng \u0111i\u1ec7n t\u1eed ho\u1eb7c b\u1ea3n scan c\u00f3 x\u00e1c nh\u1eadn b\u1eb1ng <\/span><b>ch\u1eef k\u00fd s\u1ed1<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_4_Nop_ho_so_qua_Cong_thong_tin_mot_cua_quoc_gia\"><\/span>B\u01b0\u1edbc 4: N\u1ed9p h\u1ed3 s\u01a1 qua C\u1ed5ng th\u00f4ng tin m\u1ed9t c\u1eeda qu\u1ed1c gia<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Truy c\u1eadp <\/span><b>C\u1ed5ng th\u00f4ng tin m\u1ed9t c\u1eeda qu\u1ed1c gia<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u0103ng nh\u1eadp t\u00e0i kho\u1ea3n doanh nghi\u1ec7p (n\u1ebfu ch\u01b0a c\u00f3, \u0111\u0103ng k\u00fd theo h\u01b0\u1edbng d\u1eabn t\u1ea1i<\/span> <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/www.ecosys.gov.vn\" target=\"_blank\" rel=\"nofollow noopener\">http:\/\/www.ecosys.gov.vn<\/a><\/span><span style=\"font-weight: 400;\">).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110i\u1ec1n th\u00f4ng tin doanh nghi\u1ec7p, m\u00e3 CAS, t\u00ean th\u01b0\u01a1ng m\u1ea1i (TM), t\u00ean IUPAC, v\u00e0 c\u00e1c th\u00f4ng tin li\u00ean quan \u0111\u1ebfn h\u00f3a ch\u1ea5t.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">N\u1ed9p h\u1ed3 s\u01a1 v\u00e0 ch\u1edd ph\u00ea duy\u1ec7t t\u1eeb B\u1ed9 C\u00f4ng Th\u01b0\u01a1ng.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_5_Ky_va_gui_ho_so\"><\/span>B\u01b0\u1edbc 5: K\u00fd v\u00e0 g\u1eedi h\u1ed3 s\u01a1<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng thi\u1ebft b\u1ecb \u0111\u1ecdc th\u1ebb ch\u1eef k\u00fd s\u1ed1 \u0111\u1ec3 k\u00fd v\u00e0 g\u1eedi h\u1ed3 s\u01a1.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">N\u1ebfu c\u00f3 y\u00eau c\u1ea7u s\u1eeda \u0111\u1ed5i, v\u00e0o m\u1ee5c \u201cL\u1ecbch s\u1eed\u201d tr\u00ean h\u1ec7 th\u1ed1ng \u0111\u1ec3 ch\u1ec9nh s\u1eeda v\u00e0 n\u1ed9p l\u1ea1i.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">L\u01b0u \u00fd:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Khai b\u00e1o ph\u1ea3i \u0111\u1ea7y \u0111\u1ee7, ch\u00ednh x\u00e1c. N\u1ebfu kh\u00f4ng khai b\u00e1o ho\u1eb7c khai b\u00e1o sai, doanh nghi\u1ec7p c\u00f3 th\u1ec3 b\u1ecb ph\u1ea1t t\u1eeb 20-25 tri\u1ec7u \u0111\u1ed3ng (theo Ngh\u1ecb \u0111\u1ecbnh 113\/2017\/N\u0110-CP).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Li\u00ean h\u1ec7 C\u1ee5c H\u00f3a ch\u1ea5t (024.2220.5118) ho\u1eb7c V\u0103n ph\u00f2ng \u0111\u1ea1i di\u1ec7n C\u1ee5c H\u00f3a ch\u1ea5t t\u1ea1i mi\u1ec1n Nam (08.3914.0840) n\u1ebfu c\u1ea7n h\u1ed7 tr\u1ee3<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_3203\" aria-describedby=\"caption-attachment-3203\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3203\" src=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-7.png\" alt=\"m\u00e3 cas l\u00e0 g\u00ec\" width=\"800\" height=\"533\" srcset=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-7.png 800w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-7-300x200.png 300w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-7-768x512.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-3203\" class=\"wp-caption-text\">N\u1ed9p h\u1ed3 s\u01a1 v\u00e0 ch\u1edd ph\u00ea duy\u1ec7t t\u1eeb B\u1ed9 C\u00f4ng th\u01b0\u01a1ng (Ngu\u1ed3n: S\u01b0u t\u1ea7m)<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Cach_tra_cuu_so_dang_ky_CAS\"><\/span>C\u00e1ch tra c\u1ee9u s\u1ed1 \u0111\u0103ng k\u00fd CAS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tra c\u1ee9u m\u00e3 CAS l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh th\u00f4ng tin chi ti\u1ebft v\u1ec1 m\u1ed9t ch\u1ea5t h\u00f3a h\u1ecdc, bao g\u1ed3m t\u00ean, c\u00f4ng th\u1ee9c, t\u00ednh ch\u1ea5t, v\u00e0 c\u00e1c quy \u0111\u1ecbnh li\u00ean quan. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00e1ch tra c\u1ee9u m\u00e3 CAS th\u00f4ng qua c\u01a1 s\u1edf d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn:<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_1_Su_dung_cac_co_so_du_lieu_tra_cuu_ma_CAS_truc_tuyen\"><\/span>B\u01b0\u1edbc 1: S\u1eed d\u1ee5ng c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u tra c\u1ee9u m\u00e3 CAS tr\u1ef1c tuy\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Truy c\u1eadp v\u00e0o c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u uy t\u00edn nh\u01b0:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>H\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u h\u00f3a ch\u1ea5t qu\u1ed1c gia Vi\u1ec7t Nam<\/strong>: <\/span><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/chemicaldata.gov.vn\/tim-kiem\/hoa-chat\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">https:\/\/chemicaldata.gov.vn\/tim-kiem\/hoa-chat<\/span><\/a><\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>C\u00e1c ngu\u1ed3n qu\u1ed1c t\u1ebf<\/strong> nh\u01b0 PubChem (<\/span><a href=\"https:\/\/pubchem.ncbi.nlm.nih.gov\/\" rel=\"nofollow noopener\" target=\"_blank\"><span style=\"font-weight: 400;\">https:\/\/pubchem.ncbi.nlm.nih.gov\/<\/span><\/a><span style=\"font-weight: 400;\">) ho\u1eb7c ChemSpider (<\/span><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.chemspider.com\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">https:\/\/www.chemspider.com\/<\/span><\/a><\/span><span style=\"font-weight: 400;\">)\u00a0<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_2_Nhap_ten_hoa_chat_hoac_cong_thuc\"><\/span>B\u01b0\u1edbc 2: Nh\u1eadp t\u00ean h\u00f3a ch\u1ea5t ho\u1eb7c c\u00f4ng th\u1ee9c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Trong \u00f4 t\u00ecm ki\u1ebfm c\u1ee7a website, \u0111\u1ea3m b\u1ea3o nh\u1eadp ch\u00ednh x\u00e1c \u0111\u1ec3 tr\u00e1nh sai l\u1ec7ch k\u1ebft qu\u1ea3, c\u1ee5 th\u1ec3:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">M\u00e3 CAS (v\u00ed d\u1ee5: 64-17-5 cho ethanol)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u00ean ho\u00e1 ch\u1ea5t (v\u00ed d\u1ee5: ethanol ho\u1eb7c ethyl alcohol)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00f4ng th\u1ee9c ho\u00e1 h\u1ecdc (v\u00ed d\u1ee5: C\u2082H\u2085OH)<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_3191\" aria-describedby=\"caption-attachment-3191\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3191 size-full\" src=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-2.png\" alt=\"cas c\u1ee7a h\u00f3a ch\u1ea5t\" width=\"800\" height=\"533\" srcset=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-2.png 800w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-2-300x200.png 300w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-2-768x512.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-3191\" class=\"wp-caption-text\">Nh\u1eadp t\u00ean h\u00f3a ch\u1ea5t ho\u1eb7c c\u00f4ng th\u1ee9c ch\u00ednh x\u00e1c \u0111\u1ec3 tr\u00e1nh sai l\u1ec7ch k\u1ebft qu\u1ea3 (Ngu\u1ed3n: S\u01b0u t\u1ea7m)<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_3_Bam_%E2%80%9CTim_kiem%E2%80%9D\"><\/span>B\u01b0\u1edbc 3: B\u1ea5m \u201cT\u00ecm ki\u1ebfm\u201d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Nh\u1ea5n n\u00fat \u201cT\u00ecm ki\u1ebfm\u201d (Search) tr\u00ean giao di\u1ec7n:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tr\u00ean <\/span><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/chemicaldata.gov.vn\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">chemicaldata.gov.vn<\/span><\/a><\/span><span style=\"font-weight: 400;\">, nh\u1ea5n n\u00fat \u201cT\u00ecm ki\u1ebfm\u201d m\u00e0u xanh.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tr\u00ean PubChem ho\u1eb7c ChemSpider, nh\u1ea5n bi\u1ec3u t\u01b0\u1ee3ng k\u00ednh l\u00fap ho\u1eb7c n\u00fat \u201cSearch\u201d<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Buoc_4_Xem_ket_qua\"><\/span>B\u01b0\u1edbc 4: Xem k\u1ebft qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">K\u1ebft qu\u1ea3 s\u1ebd hi\u1ec3n th\u1ecb:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">M\u00e3 CAS ch\u00ednh x\u00e1c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u00ean h\u00f3a h\u1ecdc (IUPAC, t\u00ean th\u00f4ng th\u01b0\u1eddng)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00f4ng th\u1ee9c ho\u00e1 h\u1ecdc v\u00e0 th\u00f4ng tin li\u00ean quan (t\u00ednh ch\u1ea5t, an to\u00e0n, quy \u0111\u1ecbnh).<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">V\u00ed d\u1ee5: Tra c\u1ee9u \u201c64-17-5\u201d tr\u00ean <\/span><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/chemicaldata.gov.vn\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">chemicaldata.gov.vn<\/span><\/a><\/span><span style=\"font-weight: 400;\"> s\u1ebd cho k\u1ebft qu\u1ea3: Ethanol, C\u2082H\u2085OH, v\u00e0 th\u00f4ng tin v\u1ec1 quy \u0111\u1ecbnh khai b\u00e1o t\u1ea1i Vi\u1ec7t Nam.<\/span><\/p>\n<figure id=\"attachment_3197\" aria-describedby=\"caption-attachment-3197\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3197\" src=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-4.png\" alt=\"m\u00e3 cas l\u00e0 g\u00ec\" width=\"800\" height=\"533\" srcset=\"https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-4.png 800w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-4-300x200.png 300w, https:\/\/k-chem.vn\/wp-content\/uploads\/2025\/06\/ma-cas-la-gi-4-768x512.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-3197\" class=\"wp-caption-text\">S\u1eed d\u1ee5ng c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u tra c\u1ee9u m\u00e3 CAS tr\u1ef1c tuy\u1ebfn (Ngu\u1ed3n: S\u01b0u t\u1ea7m)<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_thuong_gap_ve_CAS\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 CAS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Dang_ky_ma_CAS_o_dau\"><\/span>\u0110\u0103ng k\u00fd m\u00e3 CAS \u1edf \u0111\u00e2u?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">N\u1ebfu m\u1ed9t s\u1ea3n ph\u1ea9m h\u00f3a h\u1ecdc \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u, ph\u00e1t tri\u1ec3n v\u00e0 s\u1ea3n xu\u1ea5t t\u1ea1i m\u1ed9t t\u1ed5 ch\u1ee9c, v\u00e0 t\u1ed5 ch\u1ee9c \u0111\u00f3 mu\u1ed1n \u0111\u0103ng k\u00fd m\u00e3 CAS cho ch\u1ea5t h\u00f3a h\u1ecdc m\u1edbi, quy tr\u00ecnh \u0111\u0103ng k\u00fd ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua Chemical Abstracts Service (CAS), thu\u1ed9c Hi\u1ec7p h\u1ed9i H\u00f3a h\u1ecdc Hoa K\u1ef3 (American Chemical Society &#8211; ACS).<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u01a1 quan duy nh\u1ea5t c\u1ea5p m\u00e3 CAS<\/b><span style=\"font-weight: 400;\">: Chemical Abstracts Service (CAS).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Li\u00ean h\u1ec7<\/b><span style=\"font-weight: 400;\"><strong> t\u1ed5 ch\u1ee9c c\u1ea7n g\u1eedi y\u00eau c\u1ea7u tr\u1ef1c ti\u1ebfp \u0111\u1ebfn CAS th\u00f4ng qua c\u00e1c k\u00eanh ch\u00ednh th\u1ee9c<\/strong>:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Website<\/b><span style=\"font-weight: 400;\">: Truy c\u1eadp<\/span> <a href=\"https:\/\/www.cas.org\" target=\"_blank\" rel=\"nofollow noopener\"><b>https:\/\/www.cas.org<\/b><\/a><span style=\"font-weight: 400;\"> v\u00e0 v\u00e0o m\u1ee5c <\/span><b>CAS Registry Services<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Email<\/b><span style=\"font-weight: 400;\">: Li\u00ean h\u1ec7 qua <\/span><b>help@cas.org<\/b><span style=\"font-weight: 400;\"> ho\u1eb7c c\u00e1c \u0111\u1ecba ch\u1ec9 h\u1ed7 tr\u1ee3 \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea tr\u00ean trang web.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>\u0110i\u1ec7n tho\u1ea1i<\/b><span style=\"font-weight: 400;\">: G\u1ecdi \u0111\u1ebfn s\u1ed1 h\u1ed7 tr\u1ee3 c\u1ee7a CAS t\u1ea1i M\u1ef9: <strong>+1-800-848-6533<\/strong> (ho\u1eb7c +1-614-447-3600 cho qu\u1ed1c t\u1ebf).<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110\u1ecba \u0111i\u1ec3m x\u1eed l\u00fd<\/b><span style=\"font-weight: 400;\">: CAS c\u00f3 tr\u1ee5 s\u1edf <strong>t\u1ea1i Columbus, Ohio, Hoa K\u1ef3<\/strong>, nh\u01b0ng h\u1ed7 tr\u1ee3 \u0111\u0103ng k\u00fd to\u00e0n c\u1ea7u qua c\u00e1c k\u00eanh tr\u1ef1c tuy\u1ebfn.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Ma_so_CAS_co_the_thay_doi_khong\"><\/span>M\u00e3 s\u1ed1 CAS c\u00f3 th\u1ec3 thay \u0111\u1ed5i kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\"><strong>M\u00e3 CAS kh\u00f4ng th\u1ec3 thay \u0111\u1ed5i<\/strong>. M\u1ed9t khi \u0111\u01b0\u1ee3c Chemical Abstracts Service (CAS) g\u00e1n cho m\u1ed9t ch\u1ea5t h\u00f3a h\u1ecdc, m\u00e3 n\u00e0y l\u00e0 duy nh\u1ea5t v\u00e0 c\u1ed1 \u0111\u1ecbnh m\u00e3i m\u00e3i. N\u1ebfu c\u00f3 sai s\u00f3t ho\u1eb7c nh\u1ea7m l\u1eabn trong vi\u1ec7c s\u1eed d\u1ee5ng m\u00e3 CAS, t\u1ed5 ch\u1ee9c c\u1ea7n tra c\u1ee9u l\u1ea1i ho\u1eb7c li\u00ean h\u1ec7 CAS \u0111\u1ec3 x\u00e1c minh, nh\u01b0ng b\u1ea3n th\u00e2n m\u00e3 kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Doanh_nghiep_co_the_tu_tao_ma_CAS_rieng_duoc_khong\"><\/span>Doanh nghi\u1ec7p c\u00f3 th\u1ec3 t\u1ef1 t\u1ea1o m\u00e3 CAS ri\u00eang \u0111\u01b0\u1ee3c kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\"><strong>D<\/strong><strong style=\"font-weight: 400;\">oanh nghi\u1ec7p kh\u00f4ng th\u1ec3 t\u1ef1 t\u1ea1o m\u00e3 CAS ri\u00eang<\/strong>. Ch\u1ec9 Chemical Abstracts Service (CAS), thu\u1ed9c Hi\u1ec7p h\u1ed9i H\u00f3a h\u1ecdc Hoa K\u1ef3, c\u00f3 quy\u1ec1n c\u1ea5p m\u00e3 CAS ch\u00ednh th\u1ee9c. N\u1ebfu doanh nghi\u1ec7p c\u1ea7n m\u00e3 CAS cho ch\u1ea5t h\u00f3a h\u1ecdc m\u1edbi, h\u1ecd ph\u1ea3i \u0111\u0103ng k\u00fd th\u00f4ng qua CAS theo quy tr\u00ecnh ch\u00ednh th\u1ee9c (n\u1ed9p th\u00f4ng tin, thanh to\u00e1n ph\u00ed, v\u00e0 nh\u1eadn m\u00e3).<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ma_so_CAS_co_lien_quan_gi_den_do_nguy_hiem_cua_mot_chat\"><\/span>M\u00e3 s\u1ed1 CAS c\u00f3 li\u00ean quan g\u00ec \u0111\u1ebfn \u0111\u1ed9 nguy hi\u1ec3m c\u1ee7a m\u1ed9t ch\u1ea5t?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\"><strong>M\u00e3 CAS kh\u00f4ng tr\u1ef1c ti\u1ebfp li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 nguy hi\u1ec3m c\u1ee7a ch\u1ea5t h\u00f3a h\u1ecdc<\/strong>. N\u00f3 ch\u1ec9 l\u00e0 m\u1ed9t \u0111\u1ecbnh danh duy nh\u1ea5t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u1ea5t, kh\u00f4ng ph\u1ea3n \u00e1nh t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, h\u00f3a h\u1ecdc hay m\u1ee9c \u0111\u1ed9 nguy hi\u1ec3m. Tuy nhi\u00ean, m\u00e3 CAS gi\u00fap tra c\u1ee9u th\u00f4ng tin an to\u00e0n (nh\u01b0 MSDS) ho\u1eb7c quy \u0111\u1ecbnh ph\u00e1p l\u00fd, t\u1eeb \u0111\u00f3 bi\u1ebft \u0111\u01b0\u1ee3c m\u1ee9c \u0111\u1ed9 nguy hi\u1ec3m c\u1ee7a ch\u1ea5t (v\u00ed d\u1ee5: d\u1ec5 ch\u00e1y, \u0111\u1ed9c h\u1ea1i) th\u00f4ng qua c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u nh\u01b0 PubChem ho\u1eb7c chemicaldata.gov.vn.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Khong_khai_bao_ma_so_CAS_thi_co_sao_khong\"><\/span>Kh\u00f4ng khai b\u00e1o m\u00e3 s\u1ed1 CAS th\u00ec c\u00f3 sao kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">T\u1ea1i Vi\u1ec7t Nam, n\u1ebfu ho\u00e1 ch\u1ea5t thu\u1ed9c danh m\u1ee5c ph\u1ea3i khai b\u00e1o (Ph\u1ee5 l\u1ee5c V, <\/span><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/datafiles.chinhphu.vn\/cpp\/files\/vbpq\/2017\/10\/113.signed.pdf\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">Ngh\u1ecb \u0111\u1ecbnh 113\/2017\/N\u0110-CP<\/span><\/a><\/span><span style=\"font-weight: 400;\">) m\u00e0 doanh nghi\u1ec7p kh\u00f4ng khai b\u00e1o m\u00e3 CAS khi nh\u1eadp kh\u1ea9u, c\u00f3 th\u1ec3 s\u1ebd b\u1ecb:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Theo kho\u1ea3n 2 \u0110i\u1ec1u 4 <\/span><a href=\"https:\/\/datafiles.chinhphu.vn\/cpp\/files\/vbpq\/2019\/09\/71.signed.pdf\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">Ngh\u1ecb \u0111\u1ecbnh 71\/2019\/N\u0110-CP<\/span><\/a><span style=\"font-weight: 400;\"> quy \u0111\u1ecbnh v\u1ec1 m\u1ee9c ph\u1ea1t ti\u1ec1n \u0111\u1ed1i v\u1edbi t\u1ed5 ch\u1ee9c kh\u00f4ng th\u1ef1c hi\u1ec7n khai b\u00e1o h\u00f3a ch\u1ea5t nh\u1eadp kh\u1ea9u \u0111\u00fang quy \u0111\u1ecbnh c\u00f3 th\u1ec3 b\u1ecb <strong>x\u1eed ph\u1ea1t t\u1eeb 40.000.000 \u0111\u1ed3ng \u0111\u1ebfn 50.000.000 \u0111\u1ed3ng<\/strong>.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u1ed3ng th\u1eddi, t\u1ed5 ch\u1ee9c n\u00e0y s\u1ebd b\u1ecb <strong>\u0111\u00ecnh ch\u1ec9 vi\u1ec7c nh\u1eadp kh\u1ea9u h\u00f3a ch\u1ea5t t\u1eeb 1 \u0111\u1ebfn 3 th\u00e1ng<\/strong> k\u1ec3 t\u1eeb ng\u00e0y quy\u1ebft \u0111\u1ecbnh x\u1eed ph\u1ea1t.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">M\u00e3 CAS \u0111\u00f3ng vai tr\u00f2 kh\u00f4ng th\u1ec3 thi\u1ebfu trong vi\u1ec7c \u0111\u1ecbnh danh v\u00e0 qu\u1ea3n l\u00fd h\u00f3a ch\u1ea5t, t\u1eeb nghi\u00ean c\u1ee9u khoa h\u1ecdc \u0111\u1ebfn th\u01b0\u01a1ng m\u1ea1i v\u00e0 tu\u00e2n th\u1ee7 ph\u00e1p lu\u1eadt. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch \u0111\u1ecdc, \u0111\u0103ng k\u00fd, khai b\u00e1o v\u00e0 tra c\u1ee9u m\u00e3 CAS kh\u00f4ng ch\u1ec9 gi\u00fap doanh nghi\u1ec7p tr\u00e1nh c\u00e1c r\u1ee7i ro ph\u00e1p l\u00fd m\u00e0 c\u00f2n \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 trong qu\u1ea3n l\u00fd h\u00f3a ch\u1ea5t. \u0110\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u00fang quy tr\u00ecnh, h\u00e3y s\u1eed d\u1ee5ng c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady nh\u01b0 CAS REGISTRY, PubChem ho\u1eb7c H\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u h\u00f3a ch\u1ea5t qu\u1ed1c gia t\u1ea1i Vi\u1ec7t Nam. Hy v\u1ecdng b\u00e0i vi\u1ebft c\u00f3 th\u1ec3 cung c\u1ea5p m\u1ed9t s\u1ed1 th\u00f4ng tin c\u1ea7n thi\u1ebft. N\u1ebfu c\u00f3 b\u1ea5t k\u1ef3 th\u1eafc m\u1eafc n\u00e0o, h\u00e3y li\u00ean h\u1ec7 v\u1edbi K-chem \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n k\u1ef9 h\u01a1n v\u1ec1 th\u00f4ng tin, c\u00e1ch s\u1eed d\u1ee5ng ho\u00e1 ch\u1ea5t nh\u00e9.<\/span><\/p>\n<p style=\"text-align: justify;\"><b>C\u00d4NG TY TNHH K-CHEM VI\u1ec6T NAM<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><b>\u0110\u1ecba ch\u1ec9: <\/b><span style=\"font-weight: 400;\">\u0110\u01b0\u1eddng N6B, L\u00f4 F, C\u1ee5m N\u00f4ng Nghi\u1ec7p Ph\u00fa Ch\u00e1nh 1, Ph\u01b0\u1eddng Ph\u00fa Ch\u00e1nh, TP. T\u00e2n Uy\u00ean, T\u1ec9nh B\u00ecnh D\u01b0\u01a1ng, Vi\u1ec7t Nam<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><b>Tel:<\/b><span style=\"font-weight: 400;\"> +84 274 362 0218<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><b>Email:<\/b><span style=\"font-weight: 400;\"> info@k-chem.vn<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>M\u00e3 CAS (Chemical Abstracts Service) l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng gi\u00fap \u0111\u1ecbnh danh v\u00e0 qu\u1ea3n l\u00fd h\u00f3a ch\u1ea5t tr\u00ean to\u00e0n c\u1ea7u, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nghi\u00ean c\u1ee9u, c\u00f4ng nghi\u1ec7p v\u00e0 th\u01b0\u01a1ng m\u1ea1i. V\u1edbi vai tr\u00f2 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c v\u00e0 th\u1ed1ng nh\u1ea5t khi x\u00e1c \u0111\u1ecbnh c\u00e1c ch\u1ea5t h\u00f3a h\u1ecdc, m\u00e3 CAS [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":3201,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3190","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghiep-tin-tuc"],"acf":[],"_links":{"self":[{"href":"https:\/\/k-chem.vn\/vi\/wp-json\/wp\/v2\/posts\/3190"}],"collection":[{"href":"https:\/\/k-chem.vn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/k-chem.vn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/k-chem.vn\/vi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/k-chem.vn\/vi\/wp-json\/wp\/v2\/comments?post=3190"}],"version-history":[{"count":5,"href":"https:\/\/k-chem.vn\/vi\/wp-json\/wp\/v2\/posts\/3190\/revisions"}],"predecessor-version":[{"id":4165,"href":"https:\/\/k-chem.vn\/vi\/wp-json\/wp\/v2\/posts\/3190\/revisions\/4165"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/k-chem.vn\/vi\/wp-json\/wp\/v2\/media\/3201"}],"wp:attachment":[{"href":"https:\/\/k-chem.vn\/vi\/wp-json\/wp\/v2\/media?parent=3190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/k-chem.vn\/vi\/wp-json\/wp\/v2\/categories?post=3190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/k-chem.vn\/vi\/wp-json\/wp\/v2\/tags?post=3190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}