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      Shaoxing Huawei Chemical Co.,Ltd.
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      · Triphenylphosphine
      · Tetrachlorophthalic Anhydride
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      · Sodium sulfite
      · Sulfuric acid
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      · 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
      · E-mail: [email protected]
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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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