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        Sodium Sulfite


        【English name】: Sodium Sulfite
        【Molecular formula】: Na2SO3
        【Physical and chemical properties】: White crystal or powder, PH: 9-9.5; density: 2.633(15.4℃); refractive index: 1.565; molecular weight: 126.04

        【Executive standard】: HG/T2967-2010

        item index
        superior grade top grade qualified
        sodium sulfite (Na2SO3) %≥ 98 97 96
        ferrum(Fe) %≤ 0.003 0.003 0.005
        water insolubles%≤ 0.01 0.02 0.03
        free alkali(Na2SO3) %≤ 0.001 0.1 0.4
        sodium sulfate(Na2SO4) %≤ 1.2 2.5 2.5
        chloride(Nacl) %≤ 0.003 0.1 0.1

        Uses】:
        As deoxidizing agent and bleaching agent in dyeing industry; as developing agent in photographic industry; as reducing agent in organic industry; also applied in paper-making, electronic and water treatment industry

        【Packaging】: 25kg plastic woven bag

         
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