Anhydrous sodium dihydrogen phosphate BP 5KG Go Back


: 7558-80-7

Molecular Formula

: NaH2PO4

Molecular Weight

: 119.98
Appearance: White, slightly deliquescent crystals or granules
Solubility: Very soluble in water, very slightly soluble in ethanol (96%)
Identification A (By Chemical test): Solution should be slightly acid
Identification B1 (Phosphate): A yellow precipitate should form of which color does not changes by boiling and which dissolves on addition of ammonia.
Identification B2 (Phosphate): A yellow color should develop
Identification C (for Sodium): A dense white precipitate should form
Identification D (By Loss on drying): NMT 1.0%
Acidity: pH of the solution should be 4.2-4.5
Clarity and colour of solution: Clear and colorless solution
Arsenic (As): NMT 2 ppm
Iron (Fe): 10 ppm
Chloride (Cl): NMT 200 ppm
Sulfate: NMT 300 ppm
Reducing substances: The solution should retain slight red color
Loss on drying at 130°C: NMT 1.0%
Assay (Dried substance): 98.0% - 100.5%
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