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Home > Products >  Buy Sodium Sulfite Anhyrous 7757-83-7 /Sodium Sulfite 7757-83-7

Buy Sodium Sulfite Anhyrous 7757-83-7 /Sodium Sulfite 7757-83-7 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


  • Sodium Sulfite 7757-83-7
  • Sodium Sulfite Anhyrous 7757-83-7
  • Buy Sodium Sulfite Anhyrous

Quick Details

  • ProName: Buy Sodium Sulfite Anhyrous 7757-83-7 ...
  • 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%


Buy Sodium Sulfite Anhyrous 7757-83-7 /Sodium Sulfite 7757-83-7

Basic Information

Other Names: Sodium Sulfite Anhydrous 

Molecular Formula: Na2O3S 
Molecular Weight: 126.04
CAS NO.: 7757-83-7
EINECS NO.: 231-821-4
H.S. CODE NO.: 28321000
Standard: HG/T2967-2000
Purity: 96% min.; 97% min.; 98% min.

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.




Buy Sodium Sulfite Anhyrous 7757-83-7 /Sodium Sulfite 7757-83-7

Tech grade of sodium sulfite anhydrous


2.CAS no.:7757-83-7,

3. EINECS no: 231-821-4

4.MF: Na2SO3 

5. Appearance: White crytal powder

6. Packing: 25kg compound plastic woven bag with inner polythene liner,

7. Delivery time: within 7 days after received  T/T advance.

8. Payment Terms: T/T 30% Advance payment and 70% Cash Against documents

Usage of  sodium sulfite anhydrous 

(1) Industry Grade : Used in Dyeing and printing Industry ,as dechlorinating agent and bleaching agent, in leather and tanning industry as bleaching agent , developer agent , reductant agent , stabilizer agent , or used in papermaking, electronic and water treatment industry.

(2) Food Grade: In food industry as additive (E223) preservative, antioxidant and antimicrobic for fruits (dried, glazed and candled), vegetables (onions, potatoes, etc.), juices (citrus and grapes) and fish (shrimps and prawns). In silage treatment as antifermentative. In starch and sweeteners production as bacteriostatic.

(3) Photo Grade: In the photographic industry as component of developer bath.

(4) Pharmaceutical Grade : pharmaceutical industry for the production of chloroform, benzene and formaldehyde phenylpropanoid Sulfone

Storage of  sodium sulfite Fabric bleaching agent

 Sodium sulfite should be stored in a dry and cool place.

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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