Potassium phosphate, monobasic

Key Features and Details

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.

SYNONYMS: Potassium biphosphate; Potassium acid phosphate; Potassium dihydrogen phosphate; Monopotassium phosphate; Sorensen's potassium phosphate
CAS: # 7778-77-0
MOLECULAR FORMULA: KH2PO4
MOLECULAR WEIGHT: 136.09
EC No: 231-913-4
MDL No: MFCD00011401
SKU 02191430-CF Categories , , Tag

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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 Unless specified otherwise, MP Biomedical's products are for research or further manufacturing use only, not for direct human use. For more information, please contact our customer service department. Key Applications Component of culture media
SPECIFICATIONS
SKU: 02191430-CF
Base Catalog Number: 191430
Alternate Names: Potassium biphosphate; Potassium acid phosphate; Potassium dihydrogen phosphate; Monopotassium phosphate; Sorensen's potassium phosphate
CAS : # 7778-77-0
Density : 2.338 g/mL at 25 °C(lit.)
EC No : 231-913-4
Format : Crystalline
Grade : ACS , Anhydrous
Hazard Statements : H317
Insoluble Matter : =0.01%
MDL No : MFCD00011401
Melting Point : 252.6 °C(lit.)
Molecular Formula : KH2PO4
Molecular Weight : 136.09
pH : 4.1 - 4.5(5% aq soln, 25 °C)
pKa : (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) (25 °C)
PPE : Eyeshields, Gloves, respirator filter
RTECS No : TC6615500
Solubility : Soluble in water (0.5G in 10mL water), Insoluble to slightly soluble in ethanol; insoluble in alcohol.

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