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104865 Potassium dichromate


Replacement Information

Key Specifications Table

CAS #EC NumberHill FormulaChemical FormulaMolar MassGrade Value
7778-50-9231-906-6Cr₂K₂O₇K₂Cr₂O₇294.19 g/molACS,ISO

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      Glass bottle 500 g
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      Catalogue Number104865
      SynonymsPotassium bichromate, Potassium pyrochromate
      Product Information
      CAS number7778-50-9
      EC index number024-002-00-6
      EC number231-906-6
      Hill FormulaCr₂K₂O₇
      Chemical formulaK₂Cr₂O₇
      Molar Mass294.19 g/mol
      HS Code2841 50 00
      Quality LevelMQ300
      Biological Information
      Physicochemical Information
      Boiling point>500 °C (1013 hPa)
      Density2.680 g/cm3 (20 °C)
      Melting Point390 °C
      pH value3.5 - 5.0 (29.4 g/l, H₂O, 25 °C)
      Bulk density1250 kg/m3
      Solubility115 g/l
      Materials Information
      Toxicological Information
      LD 50 oralLD50 Rat 90.5 mg/kg
      LD 50 dermalLD50 Rat 1170 mg/kg
      Safety Information according to GHS
      Hazard Pictogram(s) Hazard Pictogram(s)
      Hazard Pictogram(s)
      Hazard Pictogram(s)
      Hazard Pictogram(s)
      Hazard Pictogram(s)
      Hazard Statement(s)H272: May intensify fire; oxidizer.
      H301: Toxic if swallowed.
      H312: Harmful in contact with skin.
      H314: Causes severe skin burns and eye damage.
      H317: May cause an allergic skin reaction.
      H330: Fatal if inhaled.
      H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled.
      H335: May cause respiratory irritation.
      H340: May cause genetic defects.
      H350: May cause cancer.
      H360FD: May damage fertility. May damage the unborn child.
      H372: Causes damage to organs through prolonged or repeated exposure if inhaled.
      H410: Very toxic to aquatic life with long lasting effects.
      Precautionary Statement(s)P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
      P260: Do not breathe dust.
      P280: Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection.
      P303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.
      P304 + P340 + P310: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor.
      P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
      Signal WordDanger
      Storage class5.1B Oxidizing hazardous materials
      WGKWGK 3 highly hazardous to water
      Inorganic peroxides and oxidants as well as bromine and iodine should be rendered harmless by reduction with acidic sodium thiosulfate solution (Cat. No. 106513); container D or E. Slightly soluble oxidants should be collected separately in container E or I.
      Safety Information
      Categories of dangercarcinogenic, mutagenic, toxic for reproduction, oxidizing, very toxic, corrosive, sensitizing, dangerous for the environment
      Product Usage Statements
      Storage and Shipping Information
      StorageStore at +2°C to +30°C.
      Packaging Information
      Transport Information
      Declaration (railroad and road) ADR, RIDUN 3086 , 6.1 (5.1), II
      Declaration (transport by air) IATA-DGRUN 3086 , 6.1 (5.1), II
      Declaration (transport by sea) IMDG-CodeUN 3086 , 6.1 (5.1), II
      Supplemental Information
      Assay (iodometric)≥ 99.9 %
      Insoluble matter≤ 0.005 %
      Chloride (Cl)≤ 0.001 %
      Sulfate (SO₄)≤ 0.005 %
      Ca (Calcium)≤ 0.002 %
      Cu (Copper)≤ 0.001 %
      Fe (Iron)≤ 0.001 %
      Hg (Mercury)≤ 0.000001 %
      Na (Sodium)≤ 0.02 %
      Pb (Lead)≤ 0.005 %
      Loss on Drying (105 °C)≤ 0.05 %
      Global Trade Identification Number
      Catalog Number GTIN