Sodium dihydrogen phosphate dihydrate Ph. Eur., USP, BP
Supplier: VWR Chemicals
Synonyms:
Phosphoric acid (sodium hydrate), Sodium phosphate monobasic dihydrate, Sodium dihydrogen orthophosphate dihydrate
28014.291EA
2515
INR
28014.291
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 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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