Isopentadiene (isoprene) - CAS # 78-79-5

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CAS 78-79-5 - Isoprene

Chemical Name:  Isopentadiene (isoprene)

Chemical Formula:  C5H8

CAS Number:  78-79-5

EC Number (EINECS):  201-143-3

Synonyms:  Isoprene;«beta»-Methylbivinyl;Isopentadiene;2-Methyl-1,3-butadiene;2-Methylbutadiene;CH2=C(CH3)CH=CH2;2-Methylbuta-1,3-diene;UN 1218

Appearance:  colourless liquid with an aromatic odour

Melting Point:  -146 C

Boiling Point:  34 C

Vapor Density:  2.35 (air = 1)

Vapor Pressure:  560 mm Hg at 20 C

Flash Point:  -54 C

Explosion Limits:  2 - 9%

Water Solubility:  negligible

Stability:  Stability Extremely flammable. Readily forms explosive mixtures with air. Note low flash point, low boiling point, high vapour pressure. Unstable - prone to spontaneous polymerization. May contain a polymerization inhibitor. Incompatible with strong oxidizing agents.

Molecular Weight:  68.1170

Alternate Names:  Isoprene | 2-Methyl-1,3-butadiene | ISOPRENE

Department:  Air

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The chemical "Isoprene" is listed on California's Proposition 65 list: 78-79-5   

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