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04243

Fosfato de potasio monobasic

Name: Fosfato de potasio monobasic
Brand: SIGALD

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

Sinónimos:

Dihidrógeno fosfato de potasio, prim.-Fosfato de potasio

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Fórmula lineal:

KH₂PO₄

Número CAS:

7778-77-0

Peso molecular:

136.09

UNSPSC Code:

12161700

eCl@ss:

38070209

PubChem Substance ID:

329747897

EC Number:

231-913-4

NACRES:

NA.25

MDL number:

MFCD00011401

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Propiedades

grade

anhydrous

Quality Segment

200

assay

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

form

crystalline

quality

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

impurities

residual solvents, complies, ≤0.04% KMnO₄ red. matter (as O), ≤0.2% in water insoluble matters, ≤10 mg/kg heavy metals (as Pb)

loss

≤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.)

solubility

H₂O: soluble 4.5 parts, alcohol: insoluble

density

2.338 g/mL at 25 °C (lit.)

anion traces

chloride (Cl^-): ≤0.001%, fluoride (F^-): ≤10 mg/kg, sulfate (SO₄^2-): ≤200 mg/kg

cation traces

As: ≤1 mg/kg, Cd: ≤1 mg/kg, Fe: ≤10 mg/kg, Hg: ≤1 mg/kg, Na: ≤0.1%, Pb: ≤1 mg/kg

suitability

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

Descripción

Application

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

Biochem/physiol Actions

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.

Preparation Note

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

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Clase de almacenamiento

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c