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Sodium dihydrogen phosphate dihydrate Ph. Eur., USP, BP

Supplier: VWR Chemicals

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Synonyms: Sodium phosphate monobasic dihydrate , Sodium dihydrogen orthophosphate dihydrate , Phosphoric acid (sodium hydrate)

28014.291EA 2515 INR InStock
28014.291 28014.462 28014.360
Sodium dihydrogen phosphate dihydrate Ph. Eur., USP, BP
Sodium dihydrogen phosphate dihydrate
Appearance: White or almost white, powder or colourless crystals.

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


Formula: NaH₂PO₄·2H₂O
MW: 156,01 g/mol
Boiling Pt: < 650 °C (1013 hPa)
Melting Pt: 60 °C
Density: 1,91 g/cm³ (20 °C)
Storage Temperature: Ambient
 MDL Number: MFCD00149209
CAS Number: 13472-35-0
EINECS: 231-449-2
UN: 0000
REACH: 01-2119489796-13
Merck Index: 12,08806
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Specification Test Results
Appearance Conforms (see CoA/CoS)
Heavy metals (as Pb) ≤10 ppm
Residual solvents Unlikely by manuf.process
As (Arsenic) ≤2 ppm
Cd (Cadmium) ≤1 ppm
Co (Cobalt) ≤1 ppm
Hg (Mercury) ≤3 ppm
Ni (Nickel) ≤1 ppm
Pb (Lead) ≤4 ppm
V (Vanadium) ≤5 ppm
Conforms to Ph.Eur./USP/BP Passes test
Ph.Eur./BP specifications: .
Assay (dried substance) [Ph.Eur./BP] 98.0 - 100.5 %
Identification A Passes test Ph.Eur./BP
Identification B Passes test Ph.Eur./BP
Identification C Passes test Ph.Eur./BP
Appearance of solution Passes test Ph.Eur./BP
pH (5 %) [Ph.Eur./BP] 4.2 - 4.5
Reducing substances Passes test Ph.Eur./BP
Cl (Chloride) [Ph.Eur./BP] ≤200 ppm
SO4 (Sulphate) [Ph.Eur./BP] ≤300 ppm
Fe (Iron) [Ph.Eur./BP] ≤10 ppm
Loss on drying (130°C) [Ph.Eur./BP] 21.5 - 24.0 %
USP specifications: .
Assay (calculated on anhydrous) [USP] 98.0 - 103.0 %
Identification A Passes test USP
Identification B Passes test USP
Insoluble substances [USP] ≤0.2 %
Cl (Chloride) [USP] ≤0.014 %
SO4 (Sulphate) [USP] ≤0.15 %
Al, Ca and related elements Passes test USP
As (Arsenic) [USP] ≤8 ppm
pH (25°C; 1 g/20 ml) [USP] 4.1 - 4.5
Water determination [USP] 18.0 - 26.5 %

 

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