Sodium perborate tetrahydrate, Sodium Perborate Monohydrate
Shangyu Jiehua Chemical Co., Ltd
Office: 51 Baiheng Rd., Sanpeng Bridge, Shangyu, Zhejiang 312300 China
Plant: Hanzhou Gulf Fine Chemical Zone of Zhejiang, China
Tel: +86-575-81222198 Fax: +86-575-82211434
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Sodium Hydrosulfite Sodium Dithionite, Sodium Hydrosulphite

  • Chemical Name: Sodium Hydrosulfite
  • Synonyms: Sodium Dithionite, Sodium Hydrosulphite
  • Molecular Formula: Na2S2O4
  • Molecular Weight: 174.09Reducing agent
  • CAS Number: 7775-14-6 Sodium Dithionite, Sodium Hydrosulphite

Product Specifications

Product Properties Standard Specifications
Purity, w/t % 88 Min.
Na2CO3 2-3
Na2S2O3 1-1.5
Na2S2O5 0.5-1.0.
Na2SO3 0.5-1.5
HCOONa 2.5-3.5
Iron (ii, iii), % 0.0018 Max.
Water insolubles, % 0.1 Max..
Odor A little SO2 smell
Appearance White crystalline powder

Product Application
This compound is a water-soluble salt, and can be used as a reducing agent in aqueous solutions. It is used as such in some industrial dying processes, where an otherwise water-insoluble dye can be reduced into a water-soluble alkali metal salt. The reduction properties of sodium dithionite also eliminate excess dye, residual oxide, and unintended pigments, thereby improving overall colour quality. It can also be used as a bleach, in, for instance, paper pulp, cotton, wool, and kaolin clay.

This chemical can also be used for water treatment, gas purification, cleaning, and stripping. It can also be used in industrial processes as a sulfonating agent or a sodium ion source. In addition to the textile industry, this compound is used in industries concerned with leather, foods, polymers, photography, and many others. Its wide use is attributable to its low toxicity LD 50 at 5 gm/kg, and hence its wide range of applications.


  • Proper Shipping Name: Sodium Hydrosuphite (Sodium Hydrosulfite)
  • Class: 4.2 (Flammable Solid) sodium hydrosuphite, sodium Hydrosulfite
  • UN Number: 1384
  • EMS: F-A, S-J


Net 50kg iron drums with inner double polyethylene liner, or transported by intermediate bluk container (IBC).

For more information, please feel free to contact with Mr.Tom Tao or please send E-mail: [email protected] Tel: +86 13967525505

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