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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
821258
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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

Products

Catalogue NumberPackaging Qty/Pack
8.21258.0100 Glass bottle 100 ml
8.21258.1000 Glass bottle 1 l
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