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            Shaoxing Huawei Chemical Co.,Ltd.
            Main products
            · Triphenylphosphine
            · Tetrachlorophthalic Anhydride
            · p-Cresol
            · Sodium sulfite
            · Sulfuric acid
            contact us
            · Binhai:Shaoxing Huawei Chemical Co.,Ltd.
            · Tel: +86-575-85620368   13957559832
            · Paojiang:Shaoxing Huali Fine Chemical Co., Ltd.
            · Tel: +86-575-85726755   13867572782
            · Pingshui:Shaoxing Huawei Chemical Co., Ltd.
            · Tel: +86-575-85767147   13505751287
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            Sodium sulfite

            【English name】:Sodium sulfite
            【Synonym】:Sulfur oxide, sodium sulfite
            【CAS】: 7757-83-7
            【Molecular formula】:Na2SO3
            【Molecular weight】:126.03
            【Index】:

            Fine anhydrous sodium sulfite

            Index
            First grade

            Sodium sulfite(Na2SO3), % ≥

            96.0

            (Fe), ‰ ≤

            0.0+86-5

            Water insoluble, % ≤

            0.03

            Free alkali(Na2CO3), %≤

            0.4

            Rough sodium sulfite

            Index

            Qualified product

            Appearance

            Grey powdery

            Sodium sulfite, %     ≥

            65~70

            Sodium sulfate, %      ≤

            10

            Water, %        ≤

            20~15

            Other, %            ≤

            5

            【Packing】:Fine anhydrous sodium sulfite in plastic woven bag, nwt 50kg/bag, Rough sodium sulfite plastic woven bag, nwt 40kg/bag.
            【Use】:Fine sodium sulfite is used in the pharmaceutical industry, dyes and production of paper making, tanning, dyeing and printing industry and food and so on. Sodium sulfite crude is used in paper making, cement production, such as water-reducing agent.

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