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Appearance:White crystalline powder
Molecular formula: Na2S2O5
Molecular weight: 190.09
CAS No.: 7681-57-4
HS No.: 28321000.00
FEMA No.: 3025
EINECS No.:231-673-0
Function :preservative,Bleaching agent,Antiseptic,Inhibitor.
Description of Sodium Metabisulfite
Sodium Metabisulfite or sodium pyrosulfite (IUPAC spelling; Br. E. sodium metabisulphite or sodium pyrosulphite) is an inorganic compound of chemical formula Na2S2O5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant and preservative agent.
Technical Specification of Sodium Metabisulfite
Tests | Specification |
Appearance | White free-flowing Crystal Powder |
Purity (Na2S2O5) | 97% min |
Iron (Fe) | 0.003% min |
Heavy Metal (Pb) | 5 ppm max |
Arsenic (As) | 1 ppm max |
Water Insoluble | 0.05% max |
PH Value | 4.0-4.6 |
Application of Sodium Metabisulfite
It is used widely as an acidifier, as a flavoring and chelating agent.
Packing
25kgs/PP PE BAG
Storage and Transportation
kept in a light-proof,well-colsed,dry and cool place.
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