Sodium Metabisulfite

Introduction of Sodium Metabisulfite

Molecular Formula: Na2S2O5

Molecular Weight:190.10

CASNO.: 7681-57-4

 

Properties& Applications:

White or light yellow crystal powder; It is easily soluble in the water and has strong deliquescence; Mordant of printing and dyeing; Dechloronat of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleaching agent of paper pulp, bamboo and timber; Bleaching agent of mineral-dressing of nonferrous.

 

Packing&Storage:

Packed in 25kg or 50kg plastic woven bags with polyethylene liner; Stored in dry and cool warehouse with packages sealed and away from rain and wetting.

 

Quality Standard:  HG/T 2826—1997 (Industry Grade) / GB 1893—86 (Food Grade)

Item	Index
	Industrial Grade	Feed Grade
Content(as Na2S2O2)%min	96	——————
Content(as SO2)%min	0.2	65
Iron (Fe)%max	0.002	0.005
Water insoluble matter% max	0.05	0.05
Arsenic(As)% max	0.001	0.002
Heavy metal(as PH)% max	0.001	0.002
PH Value	————	4-6