Potassium dihydrogen phosphate, anhydrous, white crystalline powder cell culture reagent

Supplier: MP Biomedicals
Warning

Synonyms: Monopotassiumphosphate, prim.-Potassium phosphate, Monopotassium phosphate, Potassium phosphate monobasic, Monobasic Potassium Phosphate, Potassium dihydrogen orthophosphate

0219472780 0219472790 0219472791
ICNA0219472780EA 78.4 SGD
ICNA0219472780 ICNA0219472790 ICNA0219472791
Potassium dihydrogen phosphate, anhydrous, white crystalline powder cell culture reagent
Potassium dihydrogen phosphate

Storage: Room Temperature, desiccate
Potassium phosphate is a reagent with high buffering capacity. It occurs in several forms: monobasic, dibasic and tribasic (K3PO4). Most pH neutral potassium phosphate buffer solutions consist of mixtures of the monobasic and dibasic forms to varying degrees, depending on the desired pH.
Potassium phosphate monobasic is typically used as a component for a wide variety of media used in the culture of microorganisms. It is widely used in molecular biology, biochemistry, and chromatography. It is a component in phosphate buffered saline (PBS). In addition to helping maintain pH, it supplies essential phosphate.


  • Anhydrous
  • Cell Culture Reagent Grade
  • Presentation: White Crystalline Powder
  • pKa: (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) at 25 °C (Lit.)
  • Soluble in water (100 mg/mL); Insoluble to slightly soluble in ethanol; insoluble in alcohol.

Formula: KH₂PO₄
MW: 136,09 g/mol
Melting Pt: 250 °C (dec., lit.)
Density: 2,338 g/mL (25 °C) (lit.)
Storage Temperature: Ambient
MDL Number: MFCD00011401
CAS Number: 7778-77-0

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Specification Test Results

Identity Test Passes
Assay ≥99.0%
pH (5% aq soln) 4.1-4.5

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