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SODIUM DIHYDROGEN ORTHOPHOSPHATE DIHYDRATE AR

Confirms to BP, USP
Sodium phosphate monobasic dihydrate

COAs

Packings

500 g (00500)

5000 g (05000)

1PW1200500 1PW1204000
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Article No. 05858 Grade AR
Purity 99% CAS No. 13472-35-0
Molecular Formula NaH2PO4.2H2O Molecular Weight 156.01
H.S. Code 2835.2200 Shelf Life 60 Months

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%
Revision Date: 10-Aug-2022

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