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Sodium Metabisulphite

Name:                                      Sodium Metabisulphite

Molecular Formula:                   Na2S2O5

Molecular Weight:                   190,11

EU Standard:                             E 223

Einecs:                                      231-673-0

GB standard:                             GB 1886.7-2015 

HS Code:                                   283210

CAS No.:                                   7681-57-4

  • Product Details
  • Technical Specification
  • Product Application

Other chemical names: Sodium Metabisulphite, Sodium pyrosulphite, Sodium disulphite; Disodium pentaoxodisulphate, SMBS

Properties: White crystals or crystalline powder

Packing:In 25KG bags lined with PE bags.

Storage and Transportation: suitable for any transportation conditions, sealed and stored in ventilated, dry and shady warehouse, can’t be mixed with the poisonous.

Technical Specification

Inspection Items Standard
Appearance White powder
Purity(as Na2S2O5) 96.5%min
PH 4.0-5.5
Iron(based on SO2) 10ppm max
Lead 2ppm max
Heavy Metals(Pb) 5ppm max
Arsenic(as As) 1ppm max

Product Application

♥ Food industry is used as bleaching agent, preservative, bulking agent, antioxidant, color protectant and preservative.

♥ Sodium metabisulfite has stronger reducing properties than sulfate, and its effect is similar to sodium sulfite.

♥ Used as chromatographic analysis reagent, preservative and reducing agent, used in dye and pharmaceutical industry.