Sodium dihydrogen phosphate dihydrate Ph. Eur., USP, BP
Supplier: VWR Chemicals
Synonyms:
Phosphoric acid (sodium hydrate), Sodium phosphate monobasic dihydrate, Sodium dihydrogen orthophosphate dihydrate
VWRC28014.291EA
33.8
SGD
VWRC28014.291
VWRC28014.360
VWRC28014.462
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 REACH: 01-2119489796-13 Merck Index: 12,08806 |
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 USP |
Identification B | Passes test USP |
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 % |
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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