Merck
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60356

Sigma-Aldrich

Potassium phosphate dibasic

puriss. p.a., ACS reagent, anhydrous, ≥99.0% (T)

Synonym(s):
Dipotassium hydrogenphosphate, sec.-Potassium phosphate, Dipotassium phosphate
Linear Formula:
K2HPO4
CAS Number:
Molecular Weight:
174.18
Número de EC:
Número MDL:
eCl@ss:
38070212
ID de la sustancia en PubChem:
NACRES:
NB.24

Nivel de calidad

300

grado

ACS reagent
puriss. p.a.

ensayo

≥99.0% (T)

formulario

powder or crystals

impurezas

≤0.001% total nitrogen (N)

pérdida

≤1.0% loss on drying, 105 °C

pH

8.5-9.6 (25 °C, 50 mg/mL in H2O)

trazas de anión

chloride (Cl-): ≤30 mg/kg
sulfate (SO42-): ≤50 mg/kg

trazas de catión

Ca: ≤50 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤10 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
heavy metals: ≤5 ppm (by ICP-OES)

SMILES string

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

InChI

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

InChI key

ZPWVASYFFYYZEW-UHFFFAOYSA-L

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Descripción general

Potassium phosphate dibasic is a useful biological buffer having a pH in the range of 8.5-9.6. Potassium phosphate is present in various forms: monobasic (KH2PO4), dibasic (KH2PO4), and tribasic (K3PO4). Potassium phosphate buffers are widely employed in equilibrium dialysis, high performance liquid chromatography (HPLC) and affinity capillary electrophoresis studies.

Código de clase de almacenamiento

13 - Non Combustible Solids

WGK

WGK 1

Punto de inflamabilidad F

Not applicable

Punto de inflamabilidad C

Not applicable

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