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  • Sodium Metabisulfite CAS No.: 7681-57-4
  • Sodium Metabisulfite CAS No.: 7681-57-4
Sodium Metabisulfite CAS No.: 7681-57-4Sodium Metabisulfite CAS No.: 7681-57-4

Sodium Metabisulfite CAS No.: 7681-57-4

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.

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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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