Sell sodium hydrosulfite

Description

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mail: maryzhao**8(at)yahoo(dot)cn, maryzhao**8(at)hotmail(dot)com 

Sodium hydrosulfite 
Synonyms: Sodium hydrosulphite, sodium dithionite, Sodium Hydrosulfite, Rongalite 
Molecular Formula: Na2S2O4 
Molecular Weight: **4.*0 
CAS: ********6 
HS: ***1.***0 
Hazard Calss: Class 4.2,4.3 Spontaneously combustible substance 

Property: Sodium hydrosulfite is a white crystalline powder with weak sulfurous odor. It is readily soluble in water, insoluble in alcohol. 

Specification: 
Item   *0%  *8%   *5% 
Na2S2O4   min *0%   min *8% min *5% 
(Fe)    max *0ppm   max *0ppm max *0ppm 
(Zn)    max 1ppm   max 1ppm max 1ppm 
Clarity Clarify  Clarify   Clarify 
water insoluble matter  max 0.*5% max 0.*5% max 0.*5% 

Packing: Polyethylene film bag lined with double layer, *0kg/iron drum, *1MT/1x*0FCL. 

Application: 
Widely used in printing and dyeing industry,can be used as a reducing agent for vat dyes,disperse dyes can be used to restore the clean, reactive dyes can be used for stripping color,silk,hair bleach,food bleaching agent,the depositary agent,antioxidant agents,preservation agents,bleaching of paper,industrial bleaching agent,processing,reducing agent,sulfonating agent.