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P9666

Sigma-Aldrich

Potassium phosphate dibasic trihydrate

for molecular biology, ≥99%

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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.25

grade

for molecular biology

Quality Level

Assay

≥99%

form

powder or crystals

quality

200

pH

9.2-9.4 (25 °C, 50 g/L)

solubility

water: 100 mg/mL, clear, colorless

anion traces

chloride (Cl-): ≤30 ppm

cation traces

Fe: ≤10 ppm
heavy metals (as Pb): ≤5 ppm

foreign activity

DNase, RNase and protease, none detected

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
60349P55041.19754
assay

≥99%

assay

≥99.0% (T)

assay

≥99.0%

assay

≥99.0% (acidimetric)

form

powder or crystals

form

crystals

form

powder or crystals

form

solid

pH

9.2-9.4 (25 °C, 50 g/L)

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)

solubility

water: 100 mg/mL, clear, colorless

solubility

-

solubility

water: 100 mg/mL, clear, colorless

solubility

-

anion traces

chloride (Cl-): ≤30 ppm

anion traces

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

anion traces

-

anion traces

-

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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