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60349

Sigma-Aldrich

Potassium phosphate dibasic trihydrate

puriss. p.a., ≥99.0% (T)

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Synonym(s):
Dipotassium hydrogen phosphate trihydrate, Dipotassium phosphate, di-Potassium hydrogen phosphate trihydrate
Linear Formula:
K2HPO4 · 3H2O
CAS Number:
Molecular Weight:
228.22
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

puriss. p.a.

Quality Level

Assay

≥99.0% (T)

form

crystals

impurities

≤0.001% total nitrogen (N)

pH

9.1-9.4 (25 °C, 50 mg/mL in H2O)

anion traces

chloride (Cl-): ≤20 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

As: ≤0.1 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤500 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

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

InChI

1S/2K.H3O4P.3H2O/c;;1-5(2,3)4;;;/h;;(H3,1,2,3,4);3*1H2/q2*+1;;;;/p-2

Inchi Key

XQGPKZUNMMFTAL-UHFFFAOYSA-L

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This Item
P55041.19754P9666
assay

≥99.0% (T)

assay

≥99.0%

assay

≥99.0% (acidimetric)

assay

≥99%

form

crystals

form

powder or crystals

form

solid

form

powder or crystals

impurities

≤0.001% total nitrogen (N)

impurities

-

impurities

-

impurities

-

pH

9.1-9.4 (25 °C, 50 mg/mL in H2O)

pH

9.2-9.4 (25 °C, 50 g/L)

pH

9.2-9.4 (20 °C, 50 g/L in H2O)

pH

9.2-9.4 (25 °C, 50 g/L)

anion traces

chloride (Cl-): ≤20 mg/kg, sulfate (SO42-): ≤50 mg/kg

anion traces

-

anion traces

-

anion traces

chloride (Cl-): ≤30 ppm

General description

Potassium phosphate dibasic trihydrate (K2HPO4.3H2O, Dipotassium hydrogen phosphate trihydrate, Dipotassium phosphate, di-Potassium hydrogen phosphate trihydrate) is the potassium salt having a pH in the range of 9.1-9.4.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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