Product Main

Specifications

Sodium Hydrosulfite
1.Formula: Na2S2O4
2.Hazard Class: 4.2
3.CAS No.: 7775-14-6
4.Uses:textile industry,printing,paper
.Sodium Hyposulfite (powder type)
2.used as a mechanical pulp
3.used as a reducing agent in chemical industry
 
Appearance: white crystal powders Odor:Odorless or with a slight odor of sulfur dioxide
Product Specification :
.
Technical Grade
Food Grade
90%Grade
88%Grade
85%Grade
Na2S2O4
90%
88%
85%
85%
Iron(Fe)
15ppm
13ppm
18ppm
20ppm
zinc(Zn)
1ppm
1ppm
1ppm
1ppm
solution appearance
 clear
 clear
 clear
clear
EDTA
/
/
/
qualified
Arsenic(As)
/
/
/
1ppm
other heavy metal(as Pb)
/
/
/
1ppm
Formate  
/
/
/
0.03ppm
water insolubles
0.05%
0.05%
0.05%
0.05%
shelf life(months)
12
12
12
12
Application:
1, It is for vat dyes  staining  the reducing agent, vat dyes printing auxiliaries, silk scouring and bleaching agent, dyeing agents and objects of the peel color dye vat cleaning agent in the textile industry.
2, It is used as a mechanical pulp, mechanical pulp mill hot and deinking pulp bleaching agent in pulp and paper industry.
3, It is used as sugar, candy, candied fruit, caramel, cookies, fans, etc. bleach and food preservation agent in the food industry.
4, As a bleaching agent is widely used to restore the kaolin bleaching; fur whitening bleaching and restore; bamboo products and straw products such as bleach.
5, It is used as a reducing agent in chemical industry

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