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821258 2-Methyl-1,3-butadiene

2-Methyl-1,3-butadiene (stabilised) for synthesis. CAS 78-79-5, chemical formula CH₂=CHC(CH₃)=CH₂.

2-Methyl-1,3-butadiene MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.

Synonyms: Isoprene

CAS #: 78-79-5 EC Number: 201-143-3 Molar Mass: 68.12 g/mol Chemical Formula: CH₂=CHC(CH₃)=CH₂ Hill Formula: C₅H₈
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Overview

Replacement Information

Key Spec Table

CAS #EC NumberHill FormulaChemical FormulaMolar Mass
78-79-5201-143-3C₅H₈CH₂=CHC(CH₃)=CH₂68.12 g/mol

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      Description
      Catalogue Number821258
      SynonymsIsoprene
      Description2-Methyl-1,3-butadiene
      References
      Product Information
      CAS number78-79-5
      EC index number601-014-00-5
      EC number201-143-3
      Hill FormulaC₅H₈
      Chemical formulaCH₂=CHC(CH₃)=CH₂
      Molar Mass68.12 g/mol
      HS Code2901 24 20
      Structure formula ImageStructure formula Image
      Quality LevelMQ200
      Applications
      Application2-Methyl-1,3-butadiene (stabilised) for synthesis. CAS 78-79-5, chemical formula CH₂=CHC(CH₃)=CH₂.
      Biological Information
      Physicochemical Information
      Boiling point34 °C (1013 hPa)
      Density0.68 g/cm3 (20 °C)
      Explosion limit1 - 9.7 %(V)
      Flash point-54 °C
      Ignition temperature220 °C
      Melting Point-145.95 °C
      Vapor pressure1710 hPa (50 °C)
      Solubility0.7 g/l
      Dimensions
      Materials Information
      Toxicological Information
      LD 50 oralLD50 Rat > 2000 mg/kg
      Safety Information according to GHS
      Hazard Pictogram(s) Hazard Pictogram(s)
      Hazard Pictogram(s)
      Hazard Statement(s)H224: Extremely flammable liquid and vapour.
      H341: Suspected of causing genetic defects.
      H350: May cause cancer.
      H412: Harmful to aquatic life with long lasting effects.
      Precautionary Statement(s)P202: Do not handle until all safety precautions have been read and understood.
      P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
      P233: Keep container tightly closed.
      P273: Avoid release to the environment.
      P308 + P313: IF exposed or concerned: Get medical advice/ attention.
      P403 + P233: Store in a well-ventilated place. Keep container tightly closed.
      Signal WordDanger
      Storage class3 Flammable liquids
      WGKWGK 3 highly hazardous to water
      Disposal9
      Carcinogenic compounds and flammable compounds labelled "Highly toxic" or "Toxic": container F. Alkyl sulfates are carcinogenic; Take particular care to avoid inhalation and skin contact. To neutralize alkyl sulfates, add dropwise (from a dropping funnel) to concentrated ice-cool Ammonia solution (Cat.No. 105426) with vigorous stirring. Before placing in container D, check the pH with pH Universal indicator strips (Cat.No. 109535).
      Safety Information
      Categories of dangercarcinogenic, extremely flammable, mutagenic, dangerous for the environment
      Product Usage Statements
      Storage and Shipping Information
      StorageStore at <= 20°C.
      Packaging Information
      Transport Information
      Declaration (railroad and road) ADR, RIDUN 1218 , 3, I
      Declaration (transport by air) IATA-DGRUN 1218 , 3, I
      Declaration (transport by sea) IMDG-CodeUN 1218 , 3, I
      Supplemental Information
      Specifications
      Assay (GC, area%)≥ 98.0 % (a/a)
      Density (d 20 °C/ 4 °C)0.681 - 0.683
      Identity (IR)passes test
      The material is stabilised with 4-tert-Butylpyrocatechol (TBC). At time of analytical testing a content of >100 ppm stabiliser was determined.
      Global Trade Item Number
      Catalogue Number GTIN
      8.21258.0100 04022536476896