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By certification 
Product Name: Sodium metabisulfite food grade
Category: Inorganic chemical/inorganic salt
Specifications
| Item | Chinese standard GB1893-2008 | Company standard |
| Main content(Na2S2O5) | ≥96.5 | ≥97-98% |
| Fe(As content Fe) | ≤0.003 | ≤0.0015% |
| Clarity | Pass test | Clear |
| Heavy metal content (Pb) | ≤0.0005 | ≤0.00015% |
| Arsenic content (As) | ≤0.0001 | ≤0.0001% |
Package: 25/50/1000/1250kg pp woven bags/ According to the customers requests.
Character: White crystal powder
CAS NO: 7681-57-4
EC NO: 231-673-0
Molecular Formula: Na2S2O5
H.S code: 283210 0000
Use: As mordant for printing & dyeing; as dechlorinating agent for textile bleaching; as reducing agent and sulfonating agent for chemical and medical industries etc. Food grade for food activities, antistaling agent etc
