Chemical Name : Sodium Pyrosulfite, sodium metabisulfite
CAS No : 7681-57-4
Molecular Formula:Na2S2O5
Molecule Weight:190.10
Appearance:White or light yellow crystalline powder
Product Description
Sodium Pyrosulfite/Smbs/Sodium Metabisulphite/Tech Grade 96%
Packaging:in polythene plastic bag with a polypropylene overbag, paper-plastic composite bag, kraft bag, etc.
Specification:
| ITEM |
Industrial grade |
Food grade |
| Assay: |
96% min |
96% min |
| SO2 content |
65% min |
65% min |
| Iron: |
0.005% max |
0.005% max |
| Heavy metals (as Pb) |
-- |
0.002% max |
| |
-- |
0.0002% max |
| pH |
4.0-4.6 |
4.0-4.6 |
| Water insoluble: |
0.05% max |
0.05% max
|
Main uses:
Food grade: Bleach agent (e.g.candies, cake, bamboo shoots, etc); Loose agent (e.g.bread, cracker etc); Antiseptic and germicide (e.g.fruit juice, tinned food, the cereals food is defended storage etc); Inhibitor and freshen agent (e.g.day lily, seafood, fruit and vegetable etc)
Industrial grade: Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of stapk; Treatment agent of waste water; Rubber solidifying agent Perfume industry is served as hydrocarbon perfume aldehyde The hide profession employ to do to molt dose and pliable dose and wearproof dose; The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose and so on; sewage treatment.
