Molecular formula:Na2S2O5

Molecular weight:190.11

CAS No.:7681-57-4

Item	Index
Appearance	White crystalline powder
Main content(Na2S2O5）≥%	97.0
SO2≥%	65.0
Fe≤%	0.005
Water insoluble≤%	0.05
AS≤%	0.0002
Pb≤%	0.0005
PH	4-4.6

Use:Sodium metabisulfite is mainly used as reduction agent. Furthermore, sodium metabisulfite is ideal for the bleaching of vegetable fibers and textile, for the production of solutions, which are used in the developing of photos and films as well as for the treatment of tanning agents in dyeing of textiles.

Package:25kg, 50kg, 1,000kg/PP woven bag with PE lined bag.