Disodium Phosphate Dodecahydrate IP/BP PARENTEX 5KG Go Back


: 10039-32-4

Molecular Formula

: Na2HPO4.12H2O

Molecular Weight

: 358.14
Description: Colourless, transparent crystals, very efflorescent
Solubility: Freely soluble in water, practically insoluble in ethanol (96%)
Identification (Phosphate 1): A light yellow precipitate should form, the color of which should not change by boiling and readily soluble in 10M ammonia and in dilute nitric acid
Identification (Phosphate 2): white crystalline precipitate should form
Identification (Phosphate 3): A bright yellow precipitate should form
Identification (Sodium 1): A dense white precipitate should form
Identification (Sodium 2): No precipitate should form
Identification (By Loss on drying): 57.0% - 61.0%
Identification (By Chemical test): Solution S is slightly alkaline
Appearance of solution: Solution is clear and colourless.
Reducing substances: The red colour is not completely discharged
Sodium dihydrogen phosphate: NMT 0.025
Chlorides: NMT 200ppm
Sulphate (SO4): NMT 500ppm
Arsenic (As): NMT 2ppm
Iron(Fe): NMT 20ppm
Heavy metals: NMT 10ppm
Loss on drying: 57.0% - 61.0%
Assay (Dried basis): 98.5% - 102.5%
Total aerobic microbial count: NMT 1000 CFU/gm
Total combined yeast and molds count: NMT 100 CFU/gm
Bacterial endotoxin test: 2.5 EU/gm
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