Merck
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71649

Sigma-Aldrich

Sodium phosphate dibasic dodecahydrate

BioXtra, ≥99.0% (T)

Synonym(s):
sec-Sodium phosphate, Disodium hydrogen phosphate dodecahydrate, Disodium phosphate, di-Sodium hydrogen phosphate dodecahydrate
Linear Formula:
Na2HPO4 · 12H2O
CAS Number:
Molecular Weight:
358.14
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.25

product line

BioXtra

Quality Level

assay

≥99.0% (T)

form

crystals

impurities

insoluble matter, passes filter test

pH

8.8-9.4 (25 °C, 0.1 M in H2O)

solubility

H2O: 0.1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤5 mg/kg
fluoride (F-): ≤5 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.5 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 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
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

0.1 M in H2O

UV absorption

λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01

application(s)

histology

SMILES string

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

InChI

1S/2Na.H3O4P.12H2O/c;;1-5(2,3)4;;;;;;;;;;;;/h;;(H3,1,2,3,4);12*1H2/q2*+1;;;;;;;;;;;;;/p-2

InChI key

DGLRDKLJZLEJCY-UHFFFAOYSA-L

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Application

Sodium phosphate dibasic dodecahydrate has been used in external calibration to quantify phytic acid in Great Northern beans (GNB) flour and extrudates. It has also been used in the preparation of phosphate buffer.

Other Notes

For enzymatic and histochemical studies

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

Certificate of Analysis

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Certificate of Origin

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