Merck
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04243

Sigma-Aldrich

Potassium phosphate monobasic

meets analytical specification of Ph. Eur., NF, E340, anhydrous, 98-100.5% (calc. to the dried substance)

Synonym(s):
prim.-Potassium phosphate, Monopotassium phosphate, Potassium dihydrogen phosphate
Linear Formula:
KH2PO4
CAS Number:
Molecular Weight:
136.09
Número de EC:
Número MDL:
eCl@ss:
38070209
ID de la sustancia en PubChem:
NACRES:
NA.25

Nivel de calidad

200

grado

anhydrous

ensayo

98-100.5% (calc. to the dried substance)

formulario

crystalline

calidad

meets analytical specification of Ph. Eur., NF, E340

impurezas

org. volatile impurities, complies (GC)
residual solvents, complies
≤0.001% heavy metals (as Pb)
≤0.04% KMnO4 red. matter (as O)
≤0.2% in water insoluble matters

pérdida

≤1% loss on drying, 130 °C

pH

4.2-4.5 (20 °C, 5%)

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

mp

252.6 °C (lit.)

solubilidad

H2O: soluble 4.5 parts
alcohol: insoluble

densidad

2.338 g/mL at 25 °C (lit.)

trazas de anión

chloride (Cl-): ≤10 mg/kg
fluoride (F-): ≤10 mg/kg
sulfate (SO42-): ≤200 mg/kg

trazas de catión

As: ≤2 mg/kg
Cd: ≤1 mg/kg
Cu: ≤20 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
Na: ≤1000 mg/kg
Pb: ≤4 mg/kg
Zn: ≤20 mg/kg

idoneidad

complies for appearance of solution

SMILES string

[K+].OP(O)([O-])=O

InChI

1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1

InChI key

GNSKLFRGEWLPPA-UHFFFAOYSA-M

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Aplicación

Potassium phosphate monobasic was used for separating tobacco protein by using aqueous two-phase extraction.

Acciones bioquímicas o fisiológicas

Potassium phosphate monobasic also referred to as monopotassium phosphate or potassium dihydrogen phosphate is a soluble salt of potassium that serves as a buffering agent. It enhances the solubility of calcium and phosphorus in amino acid plus dextrose solutions and hence assists in improving the mineral balance of parenterally fed low birth weight infants.

Nota de preparación

Potassium phosphate monobasic dissolves in 4.5 (approx.) parts of water to yield a solution. It is practically insoluble in alcohol.

Código de clase de almacenamiento

13 - Non Combustible Solids

Punto de inflamabilidad F

Not applicable

Punto de inflamabilidad C

Not applicable

Certificate of Analysis

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Certificate of Origin

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