Merck
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04276

Sigma-Aldrich

Sodium phosphate dibasic

puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E 339, anhydrous, 98-100.5% (calc. to the dried substance)

Synonym(s):
Sodium hydrogenphosphate, Disodium phosphate, Disodium hydrogen phosphate, sec-Sodium phosphate
Linear Formula:
Na2HPO4
CAS Number:
Molecular Weight:
141.96
Número EC:
Número MDL:
eCl@ss:
38070211
ID de substância PubChem:
NACRES:
NA.25

Nível de qualidade

200

Agency

meets analytical specifications of BP
meets analytical specifications of Ph. Eur.
meets analytical specifications of USP

grau

puriss.

teor

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

forma

powder

qualidade

meets analytical specification of Ph. Eur., BP, USP, FCC, E 339

Impurezas

reducing matter, complies
residual solvents, complies
≤0.001% heavy metals (as Pb)
≤0.002% ammonium (NH4)
≤0.2% water-insoluble matter
≤1% NaH2PO4 (calc. to dried subst.)
≤2.0% pyrophosphate (as Na4P2O7)

perda

≤1% loss on drying, 105°C, 4h
≤1% loss on drying, 130 °C

pH

8.4-9.6 (20 °C, 1%)

pKa (25 °C)

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

solubilidade

H2O: soluble 8 parts
H2O: very soluble (Hot)
alcohol: insoluble

traços de ânion

chloride (Cl-): ≤50 mg/kg
fluoride (F-): ≤10 mg/kg
sulfate (SO42-): ≤200 mg/kg

traços de cátion

As: ≤2 mg/kg
Cd: ≤1 mg/kg
Cu: ≤10 mg/kg
Fe: ≤20 mg/kg
Hg: ≤1 mg/kg
Pb: ≤4 mg/kg
Zn: ≤10 mg/kg

adequação

complies for appearance of solution

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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Aplicação

Sodium phosphate dibasic has been used for preparing phosphate buffer which in turn is utilized in X-gal staining.

Ações bioquímicas/fisiológicas

Sodium phosphate dibasic is an important component of running buffer of denaturing gel electrophoresis. It induces glomerular calcification as well as other nephrotic syndrome in Sprague-Dawley rats.

Código de classe de armazenamento

13 - Non Combustible Solids

WGK

WGK 1

Ponto de fulgor (ºF)

Not applicable

Ponto de fulgor (ºC)

Not applicable

Certificate of Analysis

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Certificate of Origin

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