磷酸钾 一元

• 产品号: 30407
• CAS号: 7778-77-0
• 分子式: H2KO4P
• 分子量: 136.085541
• 纯 度: 99.5-100.5% (calc. on dry substance)

产品别名

• 标题: Potassium phosphate monobasic
• IUPAC标准名: potassium dihydrogen phosphate
• IUPAC传统名: potassium dihydrogen phosphate
• 别名: prim.-Potassium phosphate; Potassium dihydrogen phosphate; 无水磷酸二氢钾; Monopotassium phosphate; 磷酸一钾; 磷酸二氢钾

产品登记号

• PubChem SID: 24858321
• CAS号: 7778-77-0
• MDL号: MFCD00011401
• EC号: 231-913-4

产品性质

• 痕量阴离子: chloride (Cl-): ≤5 mg/kg
• 痕量阴离子: sulfate (SO42-): ≤30 mg/kg
• 痕量阳离子: As: ≤0.5 mg/kg
• 痕量阳离子: Fe: ≤5 mg/kg
• 痕量阳离子: Na: ≤200 mg/kg
• 级别: reag. ISO, reag. Ph. Eur.
• 级别: puriss. p.a.
• 杂质: KMnO4 red. Matter (as O), complies
• 杂质: ≤0.0005% heavy metals (as Pb)
• 杂质: ≤0.001% total nitrogen (N)
• 线性分子式: KH2PO4
• 干燥失重: ≤0.2% loss on drying, 130 °C
• 纯度: 99.5-100.5% (calc. on dry substance)
• 适用性: in accordance for appearance of solution
• pKa: (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) (25°C)
• 密度: 2.338 g/mL at 25 °C(lit.)
• 熔点: 252.6 °C(lit.)
• pH值: 4.2-4.5 (20 °C, 5%)
• 个人保护装置: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
• RTECS编号: TC6615500
• 德国WGK号: 2