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106657 Sodium sulfite

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106657
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Overview

Replacement Information

Key Spec Table

CAS #EC NumberHill FormulaChemical FormulaMolar MassGrade Value
7757-83-7231-821-4Na₂O₃SNa₂SO₃126.04 g/molReag. Ph Eur

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          Description
          Catalogue Number106657
          References
          Product Information
          CAS number7757-83-7
          EC number231-821-4
          GradeReag. Ph Eur
          Hill FormulaNa₂O₃S
          Chemical formulaNa₂SO₃
          Molar Mass126.04 g/mol
          HS Code2832 10 00
          Quality LevelMQ300
          Applications
          Biological Information
          Physicochemical Information
          Density2.630 g/cm3
          Melting Point>500 °C (decomposition)
          pH value9.0 - 10.5 (126 g/l, H₂O, 25 °C)
          Bulk density1480 kg/m3
          Solubility220 g/l
          Dimensions
          Materials Information
          Toxicological Information
          LD 50 oralLD50 Rat 2610 mg/kg
          Safety Information according to GHS
          Storage class10 - 13 Other liquids and solids
          WGKWGK 1 slightly hazardous to water
          Disposal6
          Sulfides and sulfites as well as other reducing substances, inorganic cyanides and isonitriles: Stir into sodium hypochlorite solution (Cat. No. 105614) and, if necessary, leave to react for several days. Caution: some substances may show a violent reaction! Draw off any toxic or flammable gases that may be formed. Excess oxidant should be neutralized with sodium thiosulfate (Cat. No. 106513). Container D or E.
          Safety Information
          Product Usage Statements
          Storage and Shipping Information
          StorageStore at +2°C to +30°C.
          Packaging Information
          Transport Information
          Declaration (railroad and road) ADR, RIDKein Gefahrgut
          Declaration (transport by air) IATA-DGRNo Dangerous Good
          Declaration (transport by sea) IMDG-CodeNo Dangerous Good
          Supplemental Information
          Specifications
          Assay (iodometric)97.0 - 100.5 %
          Identitypasses test
          Appearance of solutionpasses test
          Insoluble matter≤ 0.005 %
          Free acidpasses test
          Titrable free base≤ 0.03 meq/g
          Chloride (Cl)≤ 0.02 %
          Thiosulfate (S₂O₃)≤ 0.1 %
          Heavy metals (as Pb)≤ 0.0005 %
          As (Arsenic)≤ 0.0001 %
          Cu (Copper)≤ 0.0005 %
          Fe (Iron)≤ 0.001 %
          Pb (Lead)≤ 0.0005 %
          Se (Selenium)≤ 0.0004 %
          Zn (Zinc)≤ 0.001 %
          Global Trade Item Number
          Catalogue Number GTIN
          1.06657.0500 04022536080789
          1.06657.1000 04022536080802

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