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Home > Products >  Hot sale and Reliable quality of Sodium Sulfite Anhyrous with fast delivery

Hot sale and Reliable quality of Sodium Sulfite Anhyrous with fast delivery 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 Anhyrous fast delivery
  • Hot sale Sodium Sulfite Anhyrous
  • Reliable quality Sodium Sulfite Anhyrous

Quick Details

  • ProName: Hot sale and Reliable quality of Sodiu...
  • 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%


Hot sale and Reliable quality of Sodium Sulfite Anhyrous with  fast delivery



Sodium sulfite Basic information
Product Name: Sodium sulfite
Synonyms: Sodium sulfite anhydrous;SODIUM SULFITE, EXSICCATED;SODIUM SULPHITE;anhydroussodiumsulfite;disodiumsulfite;exsiccatedsodiumsulfite;natriisulphis;natriumsulfid
CAS: 7757-83-7
MF: Na2O3S
MW: 126.04
EINECS: 231-821-4
Product Categories: Inorganic Chemicals;Inorganics;Water Ttreatment Chemicals;Analytical Reagents for General Use;Puriss p.a.;Q-S, Puriss p.a.;Disulfide Bridge Cleavage Reagents;AlphabeticalBiochemicals and Reagents;Biochemicals and Reagents;Denaturation;Inorganic Salts;Synthetic Reagents;Essential Chemicals;Reagent Grade;Routine Reagents;ACS GradeBiochemicals and Reagents;Disulfide Bridge Cleavage ReagentsSynthetic Reagents;inorganic compound;Paper, glass, printing and dyeing
Mol File: 7757-83-7.mol
Sodium sulfite Structure


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.



Hot sale and Reliable quality of Sodium Sulfite Anhyrous with  fast delivery

Sodium sulfite (sodium sulphite) is a soluble sodium salt of sulfurous acid (sulfite) with the chemical formula Na2SO3. It is a product of sulfur dioxide scrubbing, a part of the flue-gas desulfurization process. It is also used as a preservative to prevent dried fruit from discoloring, and for preserving meats, and is used in the same way as sodium thiosulfate to convert elemental halogens to their respective hydrohalic acids, in photography and for reducing chlorine levels in pools.

Sodium sulfite Chemical Properties
Melting point  500 °C
density  2.63
refractive index  1,484
storage temp.  Store at RT.
solubility  H2O: 1 M at 20 °C, clear, colorless
form  Solid
color  White to slightly yellow
PH 9.0-10.5 (25℃, 1M in H2O)
Water Solubility  23 g/100 mL (20 ºC)
Sensitive  Hygroscopic
Merck  14,8682
Stability: Stable. Incompatible with strong acids. Moisture and air sensitive.
CAS DataBase Reference 7757-83-7(CAS DataBase Reference)
NIST Chemistry Reference sodium sulfite(7757-83-7)
Safety Information
Hazard Codes  Xn
Risk Statements  31-36/37/38-22-40-36/38
Safety Statements  24/25-36-26-22
WGK Germany  1
RTECS  WE2150000
HS Code  28321000
Hazardous Substances Data 7757-83-7(Hazardous Substances Data)
Sodium sulfite Usage And Synthesis
Description As a soluble sodium salt of sulfurous acid, Sodium sulfite (Na2SO3) shows blenching, de-sulfurizing and dechlorinating properties which is widely applied in various fields. It is primarily used in the pulp and papermaking industry due to its blenching activity. It can serve as a good additive to help preserve the fresh appearance of good products. Besides, sodium sulfite is a component in many pharmaceuticals, which is effective to maintain the potency and stability of drugs. It can also be applied for water treatment as an oxygen scavenger agent and applied in flue gas desulfurization and preservation of photo developer solutions, etc.
Chemical Properties white crystals or powder
Definition ChEBI: An inorganic sodium salt having sulfite as the counterion.
General Description White odorless powder. Density 2.633 g / cm3. Moderately toxic. Sinks in water and dissolves slowly. Also transported as a heptahydrate Na2SO3.7H2O.
Air & Water Reactions Soluble in water. Reacts with hot water, steam or acids to produce corrosive material.
Reactivity Profile Sodium sulfite is a reducing agent, particularly under basic conditions. Reacts with oxidizing agents such as peroxides, epoxides, oxoacids. Emits toxic fumes of sodium oxide and oxides of sulfur if heated to decomposition [Lewis, 3rd ed., 1993, p. 1174].
Health Hazard When ingested, solutions cause gastric irritation by the liberation of sulfurous acid. Because of rapid oxidation to sulfate, sulfites are well tolerated until large doses are reached; then violent colic and diarrhea, circulatory disturbances, central nervous depression, and death can occur.
Fire Hazard Literature sources indicate that Sodium sulfite is noncombustible.


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