Packings
05858
Article No. 05858
Purity 99%
Molecular Formula NaH2PO4.2H2O
H.S. Code 2835.2200
Grade AR
CAS No. 13472-35-0
Molecular Weight 156.01
Shelf Life 60 Months

Physical Properties

Specifications

Safety Information and Hazard Symbols

Symbol:


Physical Properties

Physical state at 20 °C Solid Colour White crystalline
Odour Odorless pH value 4.2 - 4.5
Melting point/ Freezing point [°C] 60°C Density [g/cm3] 1.92
Solubility in water [% weight] Soluble in water

Specifications

Appearance Colorless crystals or white crystalline powder Assay 99.0 - 100.5%
Identity (acc. to pharmacopoeias) Passes test Appearance of solution Passes test
Insoluble matter in water Max 0.01% pH (1% solution in water) 4.1-4.7
pH (5% solution in water; 20°C) 4.2-4.5 pH (5.7% solution in water) 4.1-4.5
Chloride (Cl) Max 0.001% Sulphate (SO4) Max 0.005%
Aluminium, calcium and related elements Passes test Substance reducing KMnO4 (as O) Passes test
Arsenic (As) Max 0.0002% Calcium (Ca) Max 0.002%
Iron (Fe) Max 0.001% Heavy metal (as Pb) Max 0.0005%
Magnesium (Mg) Max 0.001% Potassium (K) Max 0.005%
Loss on drying (at 130°C) 21.5 - 24.0%