1.Desprition:

Purity: 98%

Molecular Formula:Na₂S₂O₅ 

Molecule Weight:190.10

Appearance:white or light yellow crystalline powder.

2.Specification & Application:

1) Industrial Grade(HG/T2826-1997)

Item	Value
Content(as Na2S2O5 ) %	≥ 97.0
Fe % (as Fe) %	≤ 0.0015
water-Insoluble %	≤ 0.01
Arsenic(as As) %	≤ 0.0001

Usage:

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.

2) Food Grade(HG/T2826-1997)    

Item	Index
Content (as Na2S2O5)	≥ 97.5
Iron(as Fe) %	≤ 0.001
Clarify degree	clearly
Heavy metals(as Pb) %	≤0.0005
Arsenic(as As) %	≤ 0.0001

Usage:

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 , brews, the cereals food is defended storage etc);
Inhibitor and freshen agent (e.g.day lily, seafood, fruit and vegetable etc)

4.Packing:

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