磷酸一钾/磷酸二氢钾/Monopotassium phosphate,≥99.5% (T)
- 产品编号：P0127
- 中文名称：磷酸一钾/磷酸二氢钾/Monopotassium phosphate
- 英文名称：Potassium phosphate monobasic
- 英文别名:Potassium dihydrogen phosphate, prim.-Potassium phosphate
- CAS号:7778-77-0
- 分子式:KH2PO4
- 分子量:136.09
- 纯度:≥99.5% (T)
- EC号:231-913-4
- MDL号:MFCD00011401
性能描述
| 试剂级别 | 分子生物学生化试剂 |
| 试剂纯度 | ≥99.5% (T) |
| impurities | DNases, none detected |
| | RNases, none detected |
| | insoluble matter, passes filter test |
| | phosphatases, none detected |
| | proteases, none detected |
| | ≤0.001% total nitrogen (N) |
| pH | 4.0-4.5 (25 °C, 1 M in H2O) |
| pKa (25 °C) | (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
| mp | 252.6 °C(lit.) |
| solubility | H2O: soluble1 M at 20 °C, clear, colorless |
| density | 2.338 g/mL at 25 °C(lit.) |
| anion traces | chloride (Cl-): ≤5 mg/kg |
| | sulfate (SO42-): ≤30 mg/kg |
Component of PBS - in the isolation and analysis of nuclear RNA.
为无色结晶或白色颗粒状粉末。空气中稳定，在400℃时失去水，变成偏磷酸盐。溶于约4.5份水，溶解度为83.5g/100ml水，不溶于乙醇。相对密度2.34。熔点 252.6℃。用于配制缓冲液。测定砷、锑、磷、铝和铁。配制磷标准液。配制培养基。测定血清中无机磷、碱性磷酸酶活力。
用途：配制缓冲液。测定砷、锑、磷、铝和铁。配制磷标准液。配制培养基。测定血清中无机磷、碱性磷酸酶活力。
