Synonyms: fertisilo; sodium metabi; sodium disulfite; sodium disulphite; sodium pyrosulfite; sodiummetabisufite; sodium pyrosulphite;
CAS NO.： 7681-57-4
EINECS： 231-673-0
Molecular formula : Na₂S₂O₅
Molecular weight: 190.11
Density:1.48 g/cm³
Melting point： 170℃
Technical specification | Standard |
Na₂S₂O₅ content | ≥96.0% |
Heavy metals (as Pb) | ≤0.001% |
Iron (Fe) | ≤0.005% |
Water insoluble | ≤0.05% |
Sodium chloride (NaCl) | ≤0.05% |
Arsenic (As) | ≤0.0002% |
PH value | ≤4.2-4.8 |
Used as bleaching agent, mordant, reducing agent, rubber coagulant, also used in organic synthesis, pharmaceutical and perfume.
It should be stored in a cool, ventilated and dry place, away from moisture and high temperatures to prevent deterioration.
25/50/500/1000kg net PP/PE bags or as customer required..
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In China, we have established a strong business foundation and have set up office in Shanghai, focusing on providing customers with supply chain solutions for specialty chemicals as well as international sourcing and distribution services.