Potassium Phosphate, Monobasic

Potassium Phosphate, Monobasic

Synonyms Potassium biphosphate; Potassium acid phosphate; Potassium dihydrogen phosphate; Monopotassium phosphate; Sorensen's potassium phosphate

CAS Number: 7778-77-0 Molecular Formula: KH2PO4 Molecular Weight: 136.09

EC Number: 231-913-4 MDL Number: MFCD00011401

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SKU 02191430-CF
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Description

Product Description

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.

Application Notes

Potassium Phosphate Monobasic is used as a component for a wide variety of media used in the culture of microorganisms, as a component in phosphate buffered saline (PBS). In addition to helping maintain pH, it supplies essential phosphate.

Usage Statement

Research Use Only (RUO). Ready for CE IVD labeling of clinical applications.

Key Applications

Component of culture media

Specifications
SKU 02191430-CF
Alternate Names Potassium biphosphate; Potassium acid phosphate; Potassium dihydrogen phosphate; Monopotassium phosphate; Sorensen's potassium phosphate
Application Notes Potassium Phosphate Monobasic is used as a component for a wide variety of media used in the culture of microorganisms, as a component in phosphate buffered saline (PBS). In addition to helping maintain pH, it supplies essential phosphate.
Chemical Class Salts
Density 2.338 g/mL at 25 °C(lit.)
EC Number 231-913-4
Format Crystalline
Grade ACS; Anhydrous
Hazard Statements H317
Heavy Metals <0.001%(as Pb)
Insoluble Matter ≤0.01%
Applications Component of culture media
Loss on Drying ≤0.2%(105 °C)
MDL # MFCD00011401
Melting Point 252.6 °C(lit.)
Molecular Formula KH2PO4
Molecular Weight 136.09
Personal Protective Equipment Eyeshields, Gloves, respirator filter
pH 4.1 - 4.5(5% aq soln, 25 °C)
Physical Appearance White Crystalline Powder
pKa (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) (25 °C)
RTECS Number TC6615500
Solubility Soluble in water (0.5G in 10mL water), Insoluble to slightly soluble in ethanol; insoluble in alcohol.
Storage and Handling Store at Room Temperature (15-30 °C); desiccate.
Usage Statement Research Use Only (RUO). Ready for CE IVD labeling of clinical applications.