Dipotassium hydrogen orthophosphate trihydrate, white crystalline powder, Reagent Grade

Supplier: MP BIOMEDICALS (FKA ICN BIOMED

Synonyms: Dipotassium hydrogen phosphate trihydrate, Potassium hydrogen phosphate trihydrate, di-Potassium hydrogen phosphate trihydrate, Potassium phosphate dibasic trihydrate, di-Potassium hydrogen orthophosphate trihydrate

02191432.1 02191432.5 0219143201 0219143205
IC191432.1EA 61.13 USD
IC191432.1 IC191432.5 IC19143201 IC19143205
Dipotassium hydrogen orthophosphate trihydrate, white crystalline powder, Reagent Grade
Dipotassium hydrogen orthophosphate trihydrate

Potassium phosphate is a reagent with high buffering capacity. It occurs in several forms: monobasic, dibasic and tribasic. Most pH neutral potassium phosphate buffer solutions consist of mixtures of the monobasic and dibasic forms to varying degrees, depending on the desired pH.


  • Component of Culture media
  • Component in phosphate buffered saline


Potassium phosphate dibasic is widely used in molecular biology, biochemistry, and chromatography. It is typically used as a component for a wide variety of media used in the culture of microorganisms, also as a component in phosphate buffered saline (PBS). In addition to helping maintain pH, it supplies essential phosphate.


Soluble in water(100 mg/ml); Insoluble to slightly soluble in ethanol; insoluble in alcohol.


Precaución: Research Use Only (RUO).

Formula: K₂HPO₄·3H₂O
MW: 228.22 g/mol
Storage Temperature: Ambient
MDL Number: MFCD00149926
CAS Number: 16788-57-1

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Specification Test Results

Identity Test Passes
FTIR Conforms to Reference
pH (5% aq soln) 8.5 - 9.6
Solubility (0.2 g/ml in water) Clear, colorless

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