Sodium metabisulphite Ph.Eur 2.5KG Go Back

CASR

: 7681-57-4

Molecular Formula

: Na2S2O5

Molecular Weight

: 190.1
Specifications  
Appearance: White or almost white crystalline powder or colorless crystals.
Solubility: Freely soluble in water. Slightly soluble in ethanol (96%).
Identification A (By pH): 3.5 to 5.0
Identification B (Reaction of sulfates): White precipitate should form
Identification C (Reaction of sodium): A dense white precipitate should form
Appearance of solution: Clear and colorless solution
pH: 3.5 to 5.0
Thiosulfates: The solution should remain clear for at least 15 min
Arsenic (As): 5ppm max
Iron (Fe): 20ppm max
Assay: 95.0% - 100.5%
COA Product Catalogues Product Search Parenteral Applications
COA Product Catalogues Product Search Parenteral Applications