60219
Fluka
Potassium phosphate monobasic
BioUltra, anhydrous, ≥99.5% (T)
| Synonym: | Monopotassium phosphate, Potassium dihydrogen phosphate, prim.-Potassium phosphate |
| CAS Number: | 7778-77-0 |
| Linear Formula: | KH2PO4 |
| Molecular Weight: | 136.09 |
| EC Number: | 231-913-4 |
| MDL number: | MFCD00011401 |
Description
| Other Notes | Primary standard buffer1; Buffer component of many culture media |
Properties
| product line | BioUltra |
| assay | ≥99.5% (T) |
| total impurities | insoluble matter, passes filter test |
| ≤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: 1 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 | |
| cation traces | Al: ≤5 mg/kg |
| As: ≤0.1 mg/kg | |
| Ba: ≤5 mg/kg | |
| Bi: ≤5 mg/kg | |
| Ca: ≤10 mg/kg | |
| Cd: ≤5 mg/kg | |
| Co: ≤5 mg/kg | |
| Cr: ≤5 mg/kg | |
| Cu: ≤5 mg/kg | |
| Fe: ≤10 mg/kg | |
| Li: ≤5 mg/kg | |
| Mg: ≤5 mg/kg | |
| Mn: ≤5 mg/kg | |
| Mo: ≤5 mg/kg | |
| Na: ≤200 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Sr: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| λ | 1 M in H2O |
| UV absorption | λ: 260 nm Amax: 0.046 |
| λ: 280 nm Amax: 0.040 |
Safety
| Personal Protective Equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
| WGK Germany | 2 |
| RTECS | TC6615500 |
References
| Cited Reference | 1. , R.M.C. Dawson, et al., eds. Data for Biochemical Research Oxford , (1986), 421 |
| Merck | Merck 13,7744 |
| reference | FT-IR 1 (2), 1267:B / FT-IR 2 (3), 4744:A / RegBook 1 (3), 3427:J / Sigma FT-IR 1 (2), 1035:B |
