105057 Potassium disulfite

105057
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Overview

Replacement Information

Key Specifications Table

CAS #EC NumberHill FormulaChemical FormulaMolar Mass
16731-55-8 240-795-3 K₂O₅S₂ K₂S₂O₅ 222.33 g/mol

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              Description
              Catalogue Number105057
              SynonymsPotassium metabisulfite, Potassium pyrosulfite
              References
              Product Information
              CAS number16731-55-8
              EC number240-795-3
              Hill FormulaK₂O₅S₂
              Chemical formulaK₂S₂O₅
              Molar Mass222.33 g/mol
              HS Code2832 20 00
              Quality LevelMQ300
              Applications
              Biological Information
              Physicochemical Information
              Melting Point150 °C (decomposition)
              pH value3.0 - 4.5 (50 g/l, H₂O, 20 °C)
              Bulk density1000 - 1300 kg/m3
              Solubility450 g/l
              Dimensions
              Materials Information
              Toxicological Information
              LD 50 oralLD50 Rat 2300 mg/kg
              Safety Information according to GHS
              Hazard Pictogram(s) Hazard Pictogram(s)
              Hazard Pictogram(s)
              Hazard Statement(s)H318: Causes serious eye damage.
              H335: May cause respiratory irritation.
              EUH031: Contact with acids liberates toxic gas.
              Precautionary Statement(s)P280: Wear eye protection.
              P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
              P313: Get medical advice/ attention.
              Signal WordDanger
              RTECSTT4920000
              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
              Hazard Symbols Hazard SymbolsIrritant
              Categories of dangerirritant
              R PhraseR 31-37-41
              Contact with acids liberates toxic gas.Irritating to respiratory system.Risk of serious damage to eyes.
              S PhraseS 26-39
              In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear eye/face protection.
              Product Usage Statements
              Storage and Shipping Information
              StorageStore at +5°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)≥ 96 %
              In water insoluble matter≤ 0.005 %
              Chloride (Cl)≤ 0.005 %
              As (Arsenic)≤ 0.0001 %
              Cu (Copper)≤ 0.001 %
              Fe (Iron)≤ 0.0005 %
              Pb (Lead)≤ 0.001 %
              Zn (Zinc)≤ 0.001 %