磷酸氢二钾 (CAS No.7758-11-4)
- 物化性质
- 白色结晶或无定形粉末，易溶于水，水溶液呈微碱性，微溶于乙醇，有吸湿性，灼烧后转化为焦磷酸盐。相对密度2.338，1%水溶液pH值约为9，204℃时分子内脱水转化为焦磷酸钾。
- 技术参数
- 含量（以干基计）≥98.0% 砷（As）≤3 mg/kg 氟化物（F）≤10 mg/kg 重金属（以Pb计）≤10 mg/kg pH值（10g/L溶液）9.0±0.4
English description（英文原文，共 1112 字符）
Product Name:Dipotassium hydrogen phosphate
English Name:Dipotassium hydrogen phosphate
CAS No.:7758-11-4
Aliases:Dipotassium phosphate, Potassium phosphate dibasic, DKP
Molecular Formula:K2HPO4 (anhydrous); K2HPO4·3H2O (trihydrate)
Physical Properties:White crystalline or amorphous powder, readily soluble in water, aqueous solution slightly alkaline, slightly soluble in ethanol, hygroscopic. Converts to potassium pyrophosphate upon ignition. Relative density 2.338, pH of 1% aqueous solution about 9, dehydrates intramolecularly at 204°C to form potassium pyrophosphate.
Uses:Mainly used in pharmaceutical industry (e.g., culture medium for penicillin and streptomycin), fermentation, bacterial culture, and production of potassium pyrophosphate. In food industry, it is used as buffering agent, chelating agent, yeast nutrient, emulsifying salt and antioxidant synergist. Also used as water treatment agent, feed additive, etc.
Technical Specifications:
Content (on dry basis) ≥ 98.0%
Arsenic (As) ≤ 3 mg/kg
Fluoride (F) ≤ 10 mg/kg
Heavy metals (as Pb) ≤ 10 mg/kg
pH (10 g/L solution) 9.0 ± 0.4
English Name:Dipotassium hydrogen phosphate
CAS No.:7758-11-4
Aliases:Dipotassium phosphate, Potassium phosphate dibasic, DKP
Molecular Formula:K2HPO4 (anhydrous); K2HPO4·3H2O (trihydrate)
Physical Properties:White crystalline or amorphous powder, readily soluble in water, aqueous solution slightly alkaline, slightly soluble in ethanol, hygroscopic. Converts to potassium pyrophosphate upon ignition. Relative density 2.338, pH of 1% aqueous solution about 9, dehydrates intramolecularly at 204°C to form potassium pyrophosphate.
Uses:Mainly used in pharmaceutical industry (e.g., culture medium for penicillin and streptomycin), fermentation, bacterial culture, and production of potassium pyrophosphate. In food industry, it is used as buffering agent, chelating agent, yeast nutrient, emulsifying salt and antioxidant synergist. Also used as water treatment agent, feed additive, etc.
Technical Specifications:
Content (on dry basis) ≥ 98.0%
Arsenic (As) ≤ 3 mg/kg
Fluoride (F) ≤ 10 mg/kg
Heavy metals (as Pb) ≤ 10 mg/kg
pH (10 g/L solution) 9.0 ± 0.4
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常见问题
- 磷酸氢二钾的 CAS 号是多少？
- 磷酸氢二钾的 CAS 号是 7758-11-4。
- 磷酸氢二钾的分子式和分子量是什么？
- 磷酸氢二钾的分子式为 K2HPO4（无水物）；K2HPO4·3H2O（三水物）。
- 磷酸氢二钾的英文名称是什么？
- 磷酸氢二钾的英文名称为 Dipotassium hydrogen phosphate。
- 磷酸氢二钾还有哪些别名？
- 磷酸氢二钾又称 磷酸二钾、DKP。
- 磷酸氢二钾有哪些供应商和生产厂家？
- 掌上化工当前收录 1 条磷酸氢二钾供应报价，来自 1 家供应商，可按地区、纯度、级别筛选对比。
- 磷酸氢二钾的供应商主要分布在哪些地区？
- 磷酸氢二钾的供应商主要分布在 上海市（1 条） 等地。
- 磷酸氢二钾有哪些级别可选？
- 平台上磷酸氢二钾的供应级别包括 工业级。
- 磷酸氢二钾的报价单位是什么？
- 磷酸氢二钾的报价单位主要有 千克。
- 哪里可以查到磷酸氢二钾的价格？
- 掌上化工磷酸氢二钾产品页汇总了各供应商的最新报价与规格，地址：/chemicals/7758-11-4/。部分供应商价格为电议，可通过页面上的询价功能直接获取。
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