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Home > Products >  High quality /High purity and low price of Sodium Sulfite Anhyrous

High quality /High purity and low price of Sodium Sulfite Anhyrous CAS NO.7757-83-7

  • FOB Price: USD: 450.00-580.00 /Metric Ton Get Latest Price
  • Min.Order: 25 Metric Ton
  • Payment Terms: L/C,T/T,Western Union,MoneyGram
  • Available Specifications:

    96%(24-200000)Metric Ton97%(24-200000)Metric Ton98%(24-200000)Metric Ton

  • Product Details


  • High quality Sodium Sulfite Anhyrous
  • low price Sodium Sulfite Anhyrous
  • High purity Sodium Sulfite Anhyrous

Quick Details

  • ProName: High quality /High purity and low pric...
  • CasNo: 7757-83-7
  • Molecular Formula: Na2SO3
  • Appearance: White crystalls powder
  • Application: Sodium sulfite CAS No. 7757-83-7 is ma...
  • DeliveryTime: 3 working days after your order
  • PackAge: 25kg .50kg.500kg etc. we can be accord...
  • Port: Huangshi, Wuhan, Yangluo, Shanghai, Ni...
  • ProductionCapacity: 200000 Metric Ton/Year
  • Purity: 96%, 97%, 98%
  • Storage: Seal in HDPE bags
  • Transportation: by sea
  • LimitNum: 25 Metric Ton
  • Water Content: 0.01%≤
  • Impurity:
  • Ash: 0.010~0.012%
  • Grade: Industrial Grade,Food Grade
  • Na2SO3: 96.5~98%
  • color: 14~22
  • PH: 9.4~9.6
  • Fe2+、Fe3+: 0.001~0.003%
  • Insolubles: 0.01~0.02%
  • Free alkali: 0.05~0.1%
  • Sulphate: 1~2.5%
  • NaCl: 0.5~0.7%
  • Moisture: 0.013~0.019%


High quality /High purity and low price of Sodium Sulfite Anhyrous

Sodium Sulfite Anhydrous 7757-83-7

Property: white gravel or powder crystal,relative density is 1.561, less to dissolve in water and its water solution has alkaline reaction; it is hard to dissolve in ethanol. It is used to produce chloroform,solasulfone and Benzaldehyde in medical industry.

Molecular Formula : Na2SO3

Molecule Weight : 126.04

CAS NO .: 7757-83-7

Appearance : White Free Flowing Fine Crystal or Powder

Company Iformation

 Huangshi Jiake Environmental Protection Technology Co., Ltd. has a building area of more than 150,000 square meters. It is a professional manufacturer of high-purity industrial-grade anhydrous sodium sulfite and sodium metabisulfite. We have annual productive capacities of 200,000 tons of anhydrous sodium sulfite with purity 96~98%.

    We have experienced technicians, leading facilities, a modern management system and an excellent after-sale service system. We use the Mechanical Vapor Recompression technology for production and Automachine for package. Our products is clean and pure, the quality is over food grade standard. Output of sodium metabisulfite covers over 18 provinces in china market,our production capacity is leading globally.




High quality /High purity and low price of Sodium Sulfite Anhyrous

Na2SO3 Anhydrous Sodium Sulfite 96%min  

Other name: sodium Sulfite Anhydrous, Sodium Sulphite, Anhydrous Sodium Sulfite

Formula: Na2SO3

Cas No.: 7757-83-7

Solubility: it is easy to dissolve in water.



Test Result

Na2SO3 %



Water insolubles %



Free Alkali







1. For the preparation of a trace analysis of tellurium and determination of niobium and developing, also used as a reducing agent.

2.For synthetic fiber fabric bleaching agent, stabilizer, photographic developer, dye bleaching deoxidizer, perfume and dye reduction agent, lignin removal agent.

3. Used as ordinary analytic reagent and photosensitive resistance materials.

4. Reductive bleaching agent, the food has strong inhibitory effects on plant food bleaching effect and the oxidase.

5.For a variety of cotton fabric scouring of cotton fiber, can prevent local oxidation and influence of fiber strength, and improve the whiteness of boiling.

6.In food industry,it used as a bleaching agent, preservative, osteoporosis agent, antioxidant.

7.It used in the production of sulfite cellulose ester, sodium thiosulfate, organic chemicals, such as bleaching fabrics.

We use experienced technology for production. First,extract the chean gas of sulfur dioxide from the production part of sulfuric acid, Mixture with food grade sodium carbonate,it comes out high quality sodium hydrogen sulfite. Second,after chemical treatment of sodium hydrogen sulfite ,mixture with ionic membrane sodium hydroxide, generated sodium sulfite with water. After concentration, desiccation and crystallization,it comes out sodium sulfite anhydrous,then we packed up the products into the warehouse.


Index name

Analytically pure-AR

Chemical pure-CP

High purity





Clarity test




Water insoluble




Sulphurous acid( counted by Na2HSO3 )




Free alkali( counted by Na2CO3 )








Thiosulfuric acid(S2O3)








Heavy metal(counted by Pb)









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