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CAS No.: 7775-14-6
Other Names: Sodium Hydrosulfite
MF: Na2S2O4
EINECS No.: 231-673-0
Purity: 85%,88%,90%
Place of Origin: China (Mainland)
Type: Reducing agent
Usage: Leather Auxiliary Agents,Paper Chemicals,Rubber Auxiliary Agents,Textile Auxiliary Agents,Water Treatment Chemicals
Brand Name: vidar
Model Number: Sodium Hydrosulfite

Specifications

Sodium hydrosulfite 85% Na2s2o4
1.CAS NO.: 7775-14-6
2.UN NO.:1384
3.Packing: 50kgs Iron drum
4.ISO CertificateSodium Hydrosulphite purity 85%,88% ,90% 1.Specifications:
Item 90% 88% 85% food grade
Na2S2 O4 ≥ 90% ≥ 88% ≥ 85% ≥ 85%
(Fe) ≤ 20ppm ≤ 20ppm ≤ 20ppm ≤ 20ppm
(Zn) ≤ 1ppm ≤ 1ppm ≤ 1ppm ≤ 1ppm
Clarity Clarify Clarify Clarify Clarify
EDTA - - - Qualified
(As) - - - ≤ 1ppm
Other heavy metals(pb) - - - ≤ 1ppm
HCHO - - - ≤ 0.05%
water insoluble matter ≤ 0.05% ≤ 0.05% ≤ 0.05% -
2.Characteristics:1)Appearance white free-flowing crystal powder
2)Smell:flavourless or smell of sulfur dioxide3.Uses: 1) It is for vat dyes staining the reducing agent, reducing hair bleaching agents, 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.4.Package:  50kg/Iron Drum   21MT/20'FCL