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              Shaoxing Huawei Chemical Co.,Ltd.
              Main products
              · Triphenylphosphine
              · Tetrachlorophthalic Anhydride
              · p-Cresol
              · Sodium sulfite
              · Sulfuric acid
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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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