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101922 3,5-Pyrocatecholdisulfonic acid disodium salt monohydrate

Overview

Key Spec Table

CAS #EC NumberHill FormulaMolar Mass
149-45-1205-741-5C₆H₄Na₂O₈S₂ * H₂O332.22 g/mol

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      Description
      Catalogue Number101922
      Synonyms1,2-Dihydroxy-3,5-benzenedisulfonic acid disodium salt, di-Sodium 4,5-dihydroxy-1,3-benzenedisulfonate, Sodium pyrocatechol-3,5-disulfonate, Tiron
      Product Information
      CAS number149-45-1
      EC number205-741-5
      Hill FormulaC₆H₄Na₂O₈S₂ * H₂O
      Molar Mass332.22 g/mol
      HS Code2908 99 00
      Structure formula ImageStructure formula Image
      Quality LevelMQ200
      Physicochemical Information
      Melting Point300 °C
      pH value5.0 (10 g/l, H₂O, 20 °C)
      Bulk density465 kg/m3
      Solubility1350 g/l
      Safety Information according to GHS
      Hazard Statement(s)H315: Causes skin irritation.
      H319: Causes serious eye irritation.
      Precautionary Statement(s)P264: Wash skin thoroughly after handling.
      P280: Wear protective gloves/ eye protection/ face protection.
      P302 + P352: IF ON SKIN: Wash with plenty of water.
      P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
      P332 + P313: If skin irritation occurs: Get medical advice/ attention.
      P337 + P313: If eye irritation persists: Get medical advice/ attention.
      Storage class10 - 13 Other liquids and solids
      WGKWGK 3 highly hazardous to water
      Disposal3
      Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
      Safety Information
      Categories of dangerirritant
      Storage and Shipping Information
      StorageStore at +15°C to +25°C.
      Specifications
      Identity (UV/VIS-Spectrum)passes test
      Absorption maximum λmax. (buffer pH 2.5)290 - 291 nm
      Spec. Absorptivity A 1%/1cm (λmax; 0.05 g/l; buffer pH 2.5; calculated on anhydrous substance)100 - 125
      Water (according to Karl Fischer)4.5 - 6.5 %
      Suitability as indicator (for metal titration)passes test
      Global Trade Item Number
      Catalogue Number GTIN
      1.01922.0100 04022536026244