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Home > Inorganic Chemistry > Inorganic Salts > Sodium sulfite for Sale > SANXIANG Sodium Sulfite
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SANXIANG Sodium Sulfite

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CAS No.:

7757-83-7

Grade:

Food Grade

Content:

97%

Port:

YUEYANG

Packaging:

25KGS

Price valid (until):

2026-02-04

Company Type:
Manufactory
Location:
China
Qualification:
Main Products:

Sodium metabisulfite

  • Product Description

  • Seller Information

  • Inquiry History

  • Description


      Product Detail  


    1. Molecular formula:Na₂SO3
    2. Molecular weight:126.04
    3. Property:CAS number: 7757-83-7
    White crystals or powders; Odorless, easily soluble in water, extremely soluble in ethanol, almost insoluble in ether. White hexagonal prism shaped crystal, soluble in water (at 0 ° C
    ) 12.54g/100ml; 80° 283g/100ml water at ℃, with a maximum solubility of about 28% at 33.4 ℃, and the aqueous solution is alkaline. Slightly soluble in alcohol, insoluble in liquid chlorine and ammonia. It is easily oxidized to sodium sulfate in the air and decomposes into sodium sulfide at high temperatures. As a strong reducing agent, it reacts with sulfur dioxide to form sodium bisulfite, which then reacts with strong acid to form the corresponding salt.
    4. Purpose:
    4.1 In the field of water treatment, sodium sulfite is used as a deoxidizer for boiler water and oilfield injection water.
    4.2 Used as an analytical reagent, often as a reducing agent. Used as a material for photoresistors and as a base solution for polarographic analysis. It is also used in the photography industry.
    4.3 Sodium sulfite is used in chemical production as a raw material for the production of sodium thiosulfate, a stabilizer for adhesive fibers, a reducing agent for fragrances, dyes, etc. It is also used in the synthesis process of intermediates; Used as a bleaching component and deoxidizer in the textile industry; Used as a sterilizing agent for beer bottles, a carving agent for glass mirrors and stone tablets; Used as a lignin removal agent in the paper industry; Used in the photosensitive industry as a developer, film protector, and anti fading agent; Used in the manufacturing of photoresistors in the electronics industry; There are also multiple uses in analytical chemistry.
    4.4 Anhydrous sodium sulfite is mainly used for the treatment of chromium wastewater and as a reducing agent in chemical silver leaching.

    5. Product Quality:

    Shop SANXIANG Sodium Sulfite-Detailed Image 1

    Certificates
    • SANXIANG Sodium Sulfite Certificates 1

    Basic Info
    Product Name:

    Sodium sulfite

    Other Name:

    Sulfurous acid,sodium salt (1:2);Sulfurous acid,disodium salt;Anhydrous sodium sulfite;Disodium sulfite;Sodium sulfite (Na2SO3);Sodium sulfite anhydrous;Sodium sulfite;Disodium sulfite (Na2SO3);S-WAT;E 221;68135-69-3

    CAS No.:

    7757-83-7

    Molecular Formula:

    H2O3S.2Na

    InChIKeys:

    InChIKey=YKZJGZHPDUVUKN-UHFFFAOYSA-N

    Molecular Weight:

    126.037

    Exact Mass:

    125.936356

    EC Number:

    231-821-4

    UNII:

    VTK01UQK3G

    ICSC Number:

    1200

    DSSTox ID:

    DTXSID2044260

    NCI Thesaurus Code:

    C28205

    Color/Form:

    Small crystals or powder|White hexagonal crystals|White crystals or powder

    HScode:

    28321000

    Categories:

    Inorganic Salts

    Characteristics
    PSA:

    82.4

    XLogP3:

    -4

    Appearance:

    Sodium sulfite is a white odorless powder. Density 2.633 g / cm3. Moderately toxic. Sinks in water and dissolves slowly. Also transported as a heptahydrate Na2SO3.7H2O.

    Density:

    2.63 g/cm3

    Melting Point:

    >500°C

    Boiling Point:

    Decomposes (NTP, 1992)

    Refractive Index:

    1.484

    Water Solubility:

    H2O: 23 g/100 mL (20 ºC)

    Storage Conditions:

    Sodium sulfite should be stored in a well-closed container in a cool, dry, place. In solution, sodium sulfite is slowly oxidized to sulfate by dissolved oxygen; strong acids lead to formation of sulfurous acid/ sulfur dioxide. On heating, sodium sulfite decomposes liberating sulfur oxides.

    Vapor Pressure:

    Negligible (NTP, 1992)

    Toxicity:

    Non-toxic

    Odor:

    Odorless

    Taste:

    Saline, sulfurous taste

    PH:

    8,5-11,5 (anhydrous: 10 % solution; heptahydrate: 20 % solution)

    Experimental Properties:

    Density: 1.539. MP: decomposes; loses 7 H2O at 150 °C /Sodium sulfite heptahydrate/|Efflorescent crystals. Unstable, oxidizing in air to sulfate. Soluble in 1.6 parts water, about 30 parts glycerol; sparingly soluble in alcohol. Aqueous solution is alkaline and dissolves sulfur; pH approximately 9 /Sodium sulfite heptahydrate/

    Air and Water Reactions:

    Soluble in water. Reacts with hot water, steam or acids to produce corrosive material.

    Reactive Group:

    Sulfite and Thiosulfate Salts

    Reactivity Alerts:

    Strong Reducing Agent

    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].

    Autoignition Temperature:

    Not flammable (USCG, 1999)

    Hazard Identification

    Classification of the substance or mixture

    Not classified.

    GHS label elements, including precautionary statements

    Pictogram(s) No symbol.
    Signal word

    No signal word

    Hazard statement(s)

    none

    Precautionary statement(s)
    Prevention

    none

    Response

    none

    Storage

    none

    Disposal

    none

    Other hazards which do not result in classification

    no data available

    Handling and Storage

    Precautions for safe handling

    Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

    Conditions for safe storage, including any incompatibilities

    Separated from strong oxidants and acids. Store in an area without drain or sewer access.

  • Seller Information
    Business Type:

    Manufactory

    Main Products:

    Sodium metabisulfite

    Location:

    LINXIANG GREEN CHEMICAL INDUSTRIAL PARK, YUEYANG CITY,HUNAN PROVINCE, CHINA

    Total Annual Revenue:

    $10 million-$25 million

    Total Employees:

    101-200

    Year of Establishment:

    1999

    Certifications:

    IFRC,Quality management system certification

              Yueyang Sanxiang Chemical is a comprehensive chemical production enterprise specializing in inorganic salts such as sodium hydrosulfite, sodium sulfite, sodium bisulfite, manganese carbonate, etc.

             The company covers an area of 50000 square meters, with a total investment of 220 million yuan and a registered capital of 12 million yuan. It currently has 120 employees.The annual total output value is about 500 million yuan. We have built a modern standard factory and comprehensive building of 40000 meters, with strong technical strength, advanced automation and intelligent production technology devices and control systems. We have gathered a group of technical elites who have been engaged in the production, research and management of sodium metabisulfite, anhydrous sodium metabisulfite and manganese products for many years. In terms of production quality, testing system, energy conservation and environmental protection, we are at the advanced level in China. We have achieved an annual production scale of 150000 tons of "Sanxiang" brand sodium metabisulfite, 30000 tons of sodium bisulfite, 40000 tons of sodium bisulfite, 30000 tons of high-purity manganese sulfate, and 5000 tons of manganese carbonate.

             The product quality is reliable and has been widely recognized by the market. IS09001:2015) International quality management system certification, ISO22000 food safety management system certification, food additive production license, high-tech enterprise, specialized and innovative enterprise, etc. The company has an excellent sales team with a product sales network covering all parts of the country, exported to more than 40 countries and regions including Africa, America, Europe, and Southeast Asia, and dedicated to providing customers with high-quality products and services. Our vision is to become a trusted food additive production base for customers, as well as a high-quality supplier of metal surface treatment and new materials for power batteries
    The company will continue to uphold the principle of; Provide peace of mind for customers, growth for employees, righteousness for society, and sustainability for the enterprise; The business philosophy. We are willing to cooperate sincerely with colleagues from all walks of life to create prosperity together.


      Company Profile  


  • Inquiry History
    32 Inquiries
    Country Product Purchase Quantity Date Posted
    India

    Sodium Sulfite anhydrous 98 %

    200.00 KG Apr 19, 2024
    United States

    SODIUM SULFITE NA2SO3 20% WT WATER 80% WT

    400.00 L Jun 23, 2026
    Egypt

    96% Sodium Sulfite

    40 MT Apr 30, 2026
    South Africa

    Sodium Sulphite

    50 MT Feb 18, 2026
    India

    Sodium sulphite

    10.00 MT Feb 11, 2026
    United States

    Sodium Sulfite

    1 MT Nov 26, 2025
    Qatar

    Sodium Sulphite (Na2SO3)

    10.00 MT Jun 20, 2025
    Saudi Arabia

    Sodium Sulfite

    1 KG Jun 5, 2025
    India

    sodium sulfite

    20.00 TON Apr 1, 2025
    Qatar

    Sodium Sulphite

    25 TON Dec 23, 2024
    Kuwait

    Sodium Sulfite Anhydrous

    12800 MT Jul 25, 2024
    Vietnam

    Sodium Sulphite

    27 TON Jul 1, 2024
    India

    Sodium sulphite

    1.00 MT Jun 26, 2024
    India

    Sodium Sulphite

    20.00 MT May 20, 2024
    Myanmar

    SODIUM SULFITE

    26 TON Jan 24, 2024
    United Arab Emirates

    Sodium sulfite 96%

    25.00 KG Jul 24, 2025
    Russia

    sodium sulfite, anhydrous

    100 TON Jul 23, 2025
    Kuwait

    ANHYDROUS SODIUM SULPHITE

    12800 MT Jul 25, 2024
    Trinidad and Tobago

    Sodium sulfite 98% white powder

    31.2 MT Nov 3, 2023
    India

    Allyl bromide

    4000 KG May 11, 2026
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