Sodium Metabisulphite

Molecular Formula:Na2S2O5
Molecule Weight:190.10
Appearance:White or light yellow crystalline powder

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
Arsenic	--	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 65533;65533;brews, 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 65533;65533;
The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose and so on; sewage treatment.

Packaging:in polythene plastic bag with a polypropylene overbag, paper-plastic composite bag, kraft bag, etc.