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    Sodium Metabisulfite

    Sodium metabisulfite is a multifaceted preservative and antioxidant agent.


    Chemical name: Sodium pyrosulfite; Sodium metabisulfite; Sodium metabisulphite; Sodium disulfite

    CAS Number:7681-57-4

    EINECS Number:231-673-0

    Molecular formula: Na2S2O5

    Molecular weight:190.107

    Product Standard: GB1886/EP/USP/FCC


    1).1080×25kg bags=27mts in one 20’FCL without pallets.

    2).1000×25kg bags=20mts in one 20’FCL with pallets.

    3).20×1000kg jumbo bags=20mts in one 20’FCL with or without pallets.

    Storage Condition: Keep well closed in its original packing in a cool & dry place.

    Shelf life: 2 years.

    Buying Guide:

    Sodium Metabisulfite

    Mondstar offers a diverse range of chemical products and is your preferred supplier of food additives and ingredients, providing high-quality sodium metabisulfite China wholesale and export services. Learn about sodium metabisulfite sds, or for more information, you can directly contact [email protected] or call +86-17303712627.

    Product Overview

    Sodium metabisulfite e223 is an inorganic compound appearing as a white crystalline powder with a pungent sulfurous odor. Sodium metabisulfite has a density of 1.48 g/cm3 and decomposes above 150°C when heated. Sodium metabisulfite exhibits excellent solubility in water or aqueous solutions, dissolving rapidly to form clear and colorless solutions. It possesses antioxidant properties that prevent oxidation and bleaching abilities that remove colors. Sodium metabisulfite has disinfectant effects on microorganisms. With its diverse properties, sodium metabisulfite has extensive applications across various industries.


    Item Unit Index
    Na2S2O3 % ≥96.5
    Fe % ≤0.003
    Clarity / Clear
    PH / 4.0-8.0
    SO2 Content % ≥65.0
    Insoluble matter in nitric acid % ≤0.02
    Arsenic (as As) % ≤0.0001
    Cl ppm ≤30.0
    Lead(As Pb) ppm ≤0.005
    The main application of Sodium Metabisulfite
    • Sodium metabisulfite in food is used as a preservative and antioxidant to preserve color, flavor, and texture. It prevents fruits and vegetables from browning. Sodium metabisulfite is commonly used in dried fruit, potato products, seafood, and baked goods.
    • In beverages, it acts as a preservative in wine, beer, fruit juice concentrates, and carbonated drinks. Sodium metabisulfite prevents microbial growth and preserves freshness.
    • In pharmaceuticals, sodium metabisulfite is used as an antioxidant and disinfectant in drug manufacturing equipment. It is also used as a preservative in injectable medicines.
    • In water treatment, sodium metabisulfite acts as a reducing agent to remove chlorine, odor, and color.
    • In the textile industry, sodium metabisulfite is used to bleach and decolorize fabrics and yarns as part of the dyeing process. Sodium metabisulfite is used as a dye stripper.
    • In photography, sodium metabisulfite is a common developer and fixer when processing film and photographs.

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