Sodium sulfite BP 5KG Go Back

CASR

: 7757-83-7

Molecular Formula

: Na2SO3

Molecular Weight

: 126.04
Specifications  
Appearance: White or almost white powder.
Solubility: Freely soluble in water, Insoluble in alcohol.
Identification A (By Chemical test): Solution should slightly alkaline.
Identification B (sulfate): A white precipitate should form.
Identification C (Sodium): A dense white precipitate should form.
Identification D (By Assay): 95.0% to 100.5%
Appearance of solution: Clear and colourless solution.
Thiosulphate(S2O3): 0.1% max
Iron(Fe): 10ppm max
Selenium (Se): 10ppm max
Zinc (Zn): 25ppm max
Assay: 95.0% to 100.5% of Na2SO3
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