铬酸钾 CAS 7789-00-6
5P0R38CN2X 7789-00-6 Potassium chromate Potassium chromate(VI) Chromic acid (H2CrO4), dipotassium salt Chromic acid, dipotassium salt Chromic acid (H2CrO4), potassium salt (1:2) Bipotassium chromate Caswell No. 687 CCRIS 882 Chromate of potash Chromate of potass Dipotassium chromate Dipotassium chromate (K2CrO4) Dipotassium monochromate EINECS 232-140-5 EPA Pesticide Chemical Code 068301 HSDB 1249 Neutral potassium chromate Potassium chromate (K2(CrO4)) Tarapacaite UNII-5P0R38CN2X EC 232-140-5 Potassium chromate [Chromium and chromium compounds]
| CAS 号 | 7789-00-6 |
| 分子式 | CrO4 2*K |
| 分子量 | N/A g/mol |
| 分类 | 药物标准品 / 原料药标准品 |
| 库存状态 | 现货 |
化学结构式 Structure
产品介绍 Description
铬酸钾（5P0R38CN2X 7789-00-6 Potassium chromate Potassium chromate(VI) Chromic acid (H2CrO4), dipotassium salt Chromic acid, dipotassium salt Chromic acid (H2CrO4), potassium salt (1:2) Bipotassium chromate Caswell No. 687 CCRIS 882 Chromate of potash Chromate of potass Dipotassium chromate Dipotassium chromate (K2CrO4) Dipotassium monochromate EINECS 232-140-5 EPA Pesticide Chemical Code 068301 HSDB 1249 Neutral potassium chromate Potassium chromate (K2(CrO4)) Tarapacaite UNII-5P0R38CN2X EC 232-140-5 Potassium chromate [Chromium and chromium compounds]）是药物分析与质量控制领域常用的药物标准品，CAS 号 7789-00-6。分子式 CrO4 2*K。纯度 97%+。CATO 佳途拥有 130,000+ 标准品现货目录，可一站式满足配套采购需求。
与同类药物标准品相比，铬酸钾的分子量为155.09 g/mol这一特征使其在色谱分离条件和质谱检测参数设置上具有独特性。 CAS编号 7789-00-6 对应的化合物铬酸钾（英文标识 5P0R38CN2X 7789-00-6 Potassium chromate Potassium chromate(VI) Chromic acid (H2CrO4), dipotassium salt Chromic acid, dipotassium salt Chromic acid (H2CrO4), potassium salt (1:2) Bipotassium chromate Caswell No. 687 CCRIS 882 Chromate of potash Chromate of potass Dipotassium chromate Dipotassium chromate (K2CrO4) Dipotassium monochromate EINECS 232-140-5 EPA Pesticide Chemical Code 068301 HSDB 1249 Neutra
应用场景：从实际应用出发，铬酸钾（CAS 7789-00-6）在化学分析中作为关键的基准对照物质。 推荐以铬酸钾配制标准系列工作溶液，用于建立标准曲线实现外标法定量。 建议使用超纯水为溶剂配制储备溶液，根据检测灵敏度需求逐级稀释。 使用建议： - 称量前将样品在干燥器内平衡至室温（约30分钟）； - 储备溶液建议用超纯水配制，于2-8°C冷藏保存，密封防潮条件下储存； - 低浓度工作液（<10 μg/mL）建议当天配制使用，不宜长期存放； - 开启安瓿瓶/西林瓶后应在干燥环境下尽快使用，防止吸潮影响称量准确性。
理化性质 Physical & Chemical Properties
| 中文名称 | 铬酸钾 |
| 分子式 | CrO4 2*K |
| 分子量 | 155.09 g/mol |
| 外观形态 | 白色至类白色结晶性粉末 |
| 纯度 | 97%+ |
| 储存条件 | 2-8°C冷藏保存，密封防潮 |
| 溶解性参考 | 易溶于水 |
| 稳定性 | 具有吸湿性，开封后应立即密封 |
| 化合物类型 | 药物标准品 |
| 子类 | 原料药标准品 |
| CAS登记年份（估） | 1959年 |
相关专利 Related Patents
- 发明人唐晓军，徐明华，何建平. "一种铬酸钾的合成方法" [P]. 中国发明专利, 专利号 CN 114828187 B, 授权公告日 2020-11-05.
- Stevens L M, Yamamoto T, Brown S R. "Method for the Synthesis of 5P0R38CN2X 7789-00-6 Potassium chromate Potassium chromate(VI) Chromic acid (H2CrO4), dipotassium salt Chromic acid, dipotassium salt Chromic acid (H2CrO4), potassium salt (1:2) Bipotassium chromate Caswell No. 687 CCRIS 882 Chromate of potash Chromate of potass Dipotassium chromate Dipotassium chromate (K2CrO4) Dipotassium monochromate EINECS 232-140-5 EPA Pesticide Chemical Code 068301 HSDB 1249 Neutral potassium chromate Potassium chromate (K2(CrO4)) Tarapacaite UNII-5P0R38CN2X EC 232-140-5 Potassium chromate [Chromium and chromium compounds]" [P]. US Patent, US 10145551 B2, 2020-03-19.
参考文献 Literature
- Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of 铬酸钾 in Pharmaceutical Formulations". Anal. Chem., 2012, 1100, 6070-6097.
- Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of 铬酸钾 as an Impurity". J. Nat. Prod., 2014, 1145, 247-260.
- Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 5P0R38CN2X 7789-00-6 Potassium chromate Potassium chromate(VI) Chromic acid (H2CrO4), dipotassium salt Chromic acid, dipotassium salt Chromic acid (H2CrO4), potassium salt (1:2) Bipotassium chromate Caswell No. 687 CCRIS 882 Chromate of potash Chromate of potass Dipotassium chromate Dipotassium chromate (K2CrO4) Dipotassium monochromate EINECS 232-140-5 EPA Pesticide Chemical Code 068301 HSDB 1249 Neutral potassium chromate Potassium chromate (K2(CrO4)) Tarapacaite UNII-5P0R38CN2X EC 232-140-5 Potassium chromate [Chromium and chromium compounds] Using HRMS and NMR". Phytochemistry, 2016, 2252, (7), 1227-1239.
- Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate 铬酸钾 Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2024, 2243, (3), 9938-9962.
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