Barium carbonate|Barium Nitrate|Barium sulphate|Charcoal|Electrolytic manganese dioxide (EMD)|Ferrous sulphate Mono|Lithopone---Changsha Hecom Chemical Co., Ltd.

Products

Sodium metabisulphate for Industrial Use

Formula: Na₂S₂O₅

Molecular Weight: 190.10

Appearance: white or light yellow crystalline powder.

HG/T 2826-1997

Item High-grade First-grade

Content (as Na₂S₂O₅)% 96.0 % min. 94.0 % min.

Iron (as Fe) 0.005 % max. 0.010% max.

water-insoluble   0.05% max. 0.05% max.

Arsenic (as As)   0.0001% max. 　

GB6010-85(first-grade)

Item Index

Content(SO₂) 65.0 % min.

Iron (Fe) 0.005% max.

insoluble in water 0.05% max.

PH Value 4.0-4.6

Main uses:

Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleaching agent of paper pulp, bamboo and timber bleaching agent of stapk; Mineral-dressing of nonferrous metals; Treating agent of waste water; Rubber solidifying agent.

Packing: In 25, 50, 1000kg PVC plastic film with a polypropylene bag.

Item	High-grade	First-grade
Content (as Na₂S₂O₅)%	96.0 % min.	94.0 % min.
Iron (as Fe)	0.005 % max.	0.010% max.
water-insoluble	0.05% max.	0.05% max.
Arsenic (as As)	0.0001% max.

Item	Index
Content(SO₂)	65.0 % min.
Iron (Fe)	0.005% max.
insoluble in water	0.05% max.
PH Value	4.0-4.6