Description & Application
Sodium Metabisulphite (Na2S2O5) is a food additive can be used as: Bleach agent; Loose agent; Antiseptic and germicide; Inhibitor and freshen agent ;also as a mordant dyeing, fabric antichlor after bleaching, paper fiber bleaching agent, waste water treatment, tanning agent for leather, natural rubber coagulant, building material,etc.
Typical Properties
CAS NUMBER: 7681-57-4
Chemical product: Sodium Metabisulphite
Chemical Formula: Na2S2O5
Assay as Na2S2O5: 97.0%min.
Iron as Fe: 20ppm max.
Arsenic as As: 2ppm max.
Heavy metal as Pb: 10ppm max.
Water insoluble: 0.05%max.
PH (1% solution,25℃): 4.0 –4.6
Appearance: White or slight yellowish crystalline powder
Packaging
Sodium Metabisulphite is supplied in 25kgs net kraft paper / plastic woven bag. Or in 550/600/1,100/1,200kgs jumbo bag.
Handling
User Exposure: Do not breathe dust. Avoid contact with
eyes, skin, and clothing. Avoid prolonged or repeated exposure.
Storage
Suitable: Keep tightly closed.