Disodium hydrogen phosphate dihydrate Ph. Eur., USP

Supplier: VWR Chemicals

Synonyms: sec-Sodium phosphate, Sodium monohydrogen phosphate dihydrate, Sodium hydrogenphosphate dihydrate, di-Sodium hydrogen orthophosphate dihydrate, Sodium phosphate dibasic dihydrate, Disodium phosphate, di-Sodium hydrogen phosphate dihydrate, Sorensen's salt

VWRC87010.360EA 171 SGD
VWRC87010.360 VWRC87010.460 VWRC87010.290
Disodium hydrogen phosphate dihydrate Ph. Eur., USP
di-Sodium hydrogen phosphate dihydrate

Appearance: White or almost white, powder or colourless crystals.


Caution: Not for use as Active Pharmaceutical Ingredient (API)

Formula: Na₂HPO₄·2H₂O
MW: 177,99 g/mol
Melting Pt: 92,5 °C
Density: 2,1 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00149182
CAS Number: 10028-24-7
EINECS: 231-448-7

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Specification Test Results

Appearance Conforms (see CoA/CoS)
Heavy metals (as Pb) ≤ 20 ppm
Residual solvents Unlikely by manuf.process
Residues of metal catalysts or reagents Unlikely by manuf.process
As (Arsenic) ≤ 2 ppm
Cd (Cadmium) ≤ 1 ppm
Co (Cobalt) ≤ 1 ppm
Hg (Mercury) ≤ 2 ppm
Ni (Nickel) ≤ 1 ppm
Pb (Lead) ≤ 2 ppm
V (Vanadium) ≤ 3 ppm
Conforms to Ph.Eur./USP Passes test
Ph.Eur. specifications: .
Assay (dried substance) [Ph.Eur.] 98.0 - 101.0 %
Identification A Passes test USP
Identification B Passes test USP
Identification C Passes test Ph.Eur.
Identification D Passes test Ph.Eur.
Appearance of solution Passes test Ph.Eur.
Reducing substances Passes test Ph.Eur.
Monosodium phosphate [Ph.Eur.] ≤ 2.5 %
Cl (Chloride) [Ph.Eur.] ≤ 400 ppm
SO4 (Sulphate) [Ph.Eur.] ≤ 0.1 %
Fe (Iron) [Ph.Eur.] ≤ 40 ppm
Loss on drying (130°C) [Ph.Eur.] 19.5 - 21.0 %
USP specifications: .
Assay (calculated on dried basis) [USP] 98.0 - 100.5 %
Insoluble substances [USP] ≤ 0.4 %
Cl (Chloride) [USP] ≤ 0.06 %
SO4 (Sulphate) [USP] ≤ 0.2 %
As (Arsenic) [USP] ≤ 16 ppm
Loss on drying (130°C) [USP] 18.5 - 21.5 %

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