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    Sodium metabisulfite
    Product Name
    Sodium metabisulfite
    CAS NO.
    7681-57-4
    EINECS
    231-673-0
    Molecular formula

    Na2S2O5

    Molecular weight
    190.1065
    Risk terms
    R22; R31; R41;
    Safety terms
    S26; S39; S46;
    Properties

    Properties: White or slightly yellow crystalline powder.  
    Relative density: 1.4
    Solubility: soluble in water, acidic aqueous solution. Soluble in glycerol, slightly soluble in e

    Use
    Used as bleach, mordant, reducing agent, rubber coagulant, also used in organic synthesis, pharmaceutical and spices, etc.



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