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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
          8.21258.1000 04022536476902