Dibasic sodium phosphate anhydrous USP 25KG Go Back

CASR

: 7558-79-4

Molecular Formula

: Na2HPO4

Molecular Weight

: 141.96
Specifications  
Description: White powder that readily absorbs moisture.
Solubility: Freely soluble in water; insoluble in alcohol
Identification A (Sodium): A dense precipitate should form.
Identification B (Phosphate 1): With silver nitrate solution neutral solution should yield yellow precipitate that soluble in 2N nitric acid and 6 N ammonium hydroxide.
Identification B (Phosphate 2): With ammonium molybdate solution, acidified solutions should yield a yellow precipitate that should soluble in 6N ammonium hydroxide.
Assay (on dry basis): 98.0% - 100.5% (Na2HPO4)
Insoluble Substances: NMT 0.4%
Chlorides: NMT 0.06%
Sulfate (SO4): NMT 0.2%
Arsenic (As): NMT 16ppm
Loss on drying,130°C: NMT 5.0%
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