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Sodium Sulfite

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Sodium sulfite
Sodium sulfite

Sodium sulfite


1.Purity:90%, 93, 96%
2.CAS NO.:7757-83-7

4.Appearance: white crystal powder

5.HS CODE:  28321000

6.Mol wt : 126.04


7. Package

Sodium sulfite is packed in net weight 25kg plstic woven bag with plastic inner bag. or as customers' request  25tons/20'FCL.


Bleaching agent for paper pulps, Waste water treatment, Bleaching agent for mining industry, Colors stripper and deoxidization, Auxiliaryn Chemical in tanning process


1. It  is used in the production of sulfur dyes in the dye industry, and is the raw material of sulfur blue .
2. also is used as a stain aid for dissolving sulfur dyes in the printing and dyeing industry .
3. for the hydrolysis of raw hide hair removal in the leather industry ,but also for the preparation of sodium polysulfide to speed up the dry skin soft water to help .
4. It is used as cooking agent in paper industry .
5. as rayon denitration and reduction of nitrate content in the textile industry .
6. Also it is the raw material of sodium thiosulfate ,sodium polysulfide ,sulfur dyes and other materials.

The first typeThe second type
Premium gradeFirst gradeQualified productPremium gradeFirst grade
Content (Na2S)%   ≥
Na2SO3 %         ≤1.0----
Na2S2O3%      ≤2.5----
Fe%    ≤
Water insoluble matter%  ≤
Na2CO3%    ≤2.0--3.5-

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