Sodium Metabisulfite
 

Sodium metabisulfite

We produce two grades of sodium metabisulfite: Technical and Food.

Common Applications

Textile Bleaching agent for textile fibers; color stripping and dechlorination; preparation of indigo vat Dye
Leather Solubilizing and acidifying agent
Pulp and Paper Bleaching agent
Food Food preservative and sterilization

Product Specifications

Chemical Formula: Na2S2O5
CAS No: 7681-57-4
Packaging : 25 kg compound plastic woven bag with inner polythene liner; 1000kg or 1100kg Jumbo bags

 
Technical Grade
Food Grade
Na2S2O5
96%
96.5 (SO2 65%)
Iron (Fe)
50 ppm
50 ppm
Water insolubles
0.05%
Arsenic (As)
1 ppm
1 ppm
Heavy Metal (such as Pb)
10 ppm
Shelf life
6 months
6 months

Storage and handling

Store the product in a cool and dry place; prevent from direct sunlight, water and moisture; avoid contact with strong acid, oxidants or poisonous substances. Sodium metabisulfite oxidize to sodium sulfate easily when exposing to moisture. Do not store it for long time.

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