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S3264

Sigma-Aldrich

Sodium phosphate dibasic

for molecular biology, ≥98.5% (titration)

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Synonym(s):
sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate
Linear Formula:
Na2HPO4
CAS Number:
7558-79-4
Molecular Weight:
141.96
EC Number:
231-448-7
MDL number:
MFCD00003496
eCl@ss:
38070211
PubChem Substance ID:
24899552
NACRES:
NA.25

grade

for molecular biology

Quality Level

300

Assay

≥98.5% (titration)

form

powder

pH

8.9-9.2 (25 °C, 50 g/L in water)

pKa (25 °C)

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

solubility

H2O: 100 mg/mL

anion traces

chloride (Cl-): ≤40 ppm

cation traces

Fe: ≤20 ppm
heavy metals (as Pb): ≤10 ppm

application(s)

diagnostic assay manufacturing

foreign activity

DNase, RNase and protease, none detected

SMILES string

[Na+].[Na+].[H]OP([O-])([O-])=O

InChI

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

InChI key

BNIILDVGGAEEIG-UHFFFAOYSA-L

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Related Categories

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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