Audited Supplier
Food Grade
7681-57-4
Powder
HS
CCIC, CIQ, RoHS, ISO
90%~99%
Sodium Sulfide
Food Grade
Na2s2o5
190.10
White or Light Yellow Crystalline Powder
Bleach Agent e.g.Candies, Cake, Bamboo Shoots, etc
Haitong
25kg/1000kg Net In Plastic Woven Bag With PE Liner
China
2831102000
Product Description
Product Name: Sodium metabisulfite
CAS No.: 7681-57-4
H. S Code: 2831102000
Molecular weight: 190.10
Appearance: White crystalline powder, free from extraneous matter with a faint odour of sulphur dioxide gas...
Package: 25kg / 1000kg net in the plastic woven bag with PE liner.
Application: Used as a food preservative. It is a slight hazy solution free from inappropriate impurities. These sulphites are available in white and faint cream crystalline free flowing powder and are widely used in photographic chemical and preservative chemical.Used in medicine when producing chloroform,solasulfone and methnylal;used as coagulant in rubber industry; used as dechlorided agent or assistants in printing and dyeing industry; used to improve leather properties in leather industry; used as developing agent in photosensitivity industry; used when producing hydroxyl geranial, hydrochloric hydroxylamine in chemical industry; used as bleaching agent, antiseptics, antioxidant, ect.in food industry.
Specification:
| Items | Technical grade | Food grade |
| Assay | 96% min | 97% min |
| Assay as SO2 | 65% min | 65% min |
| Water insoluble | 0.05% max | 0.05% max |
| Ferric (Fe) | 0.003% max | 0.003% max |
| pH value | 4.0-4.6 | 4.0-4.6 |
| Lead (Pb) | ** | 0.002% max |
| Arsenic (As) | ** | 0.0002% max |
