It widely applies to reduction dyes and sulfur deyes deyeing, wool and silk bleaching, disperse dyes reducing clieaning. And it

sodium hydrosulfite

Chemical Formula  Na2O4S2

Molecular Weight 174.1071

CAS NO. 7775-14-6

Specification

EINECS NO

231-890-0

Sodium Hydrosulfite	Specification
	1	2	3
Purity%	85%	88%min	90%min
Na2CO3%	6.0%max	6.0%max	6.0%max
Na2S2O3%	0.4-1.5%	0.4-1.5%	0.4-1.5%
Na2S2O5%	3.5-7.0%	3.5-7.0%	3.5-7.0%
Na2SO3%	0.6%max	0.6%max	0.6%max
HCOONa%	0.05%max	0.05%max	0.05%max
Fe(ppm)	18max	20ppmmax	20ppmmax
As%
Zn(ppm)	4max	1ppmmax	1ppmmax
Water Insolubles	0.1%max	0.05%max	0.05%max
Total other heavy metals(as Pb)	1ppm max	1ppmmax	1ppmmax

USE It widely applies to reduction dyes and sulfur deyes deyeing, wool and silk bleaching, disperse dyes reducing clieaning. And it is used in paper making industry as bleaching agent, deinking, etc.

Packing in 50kg iron drum

Quantity 20'FCL 18/21MT with/without pallets

sodium hydrosulfite china