Volatile, water-insoluble liquid

• Petroleum processing by-product
• Rubber compound
• Petroleum byproduct used to make synthetic rubber
• Liquid in synthetic rubber manufacture
• Hydrocarbon in rubber
• Synthetic-rubber ingredient
• Hydrocarbon pioneers modified

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Isoprene \I"so*prene\, n. [Etymol. uncertain.] (Chem.) An oily, volatile unsaturated hydrocarbon ( C5H8 ), obtained by the distillation of caoutchouc or gutta-percha, and used to make synthetic rubber by polymerization. In organic chemistry, it is viewed ...

Wiktionary Word definitions in Wiktionary
n. (context organic compound English) An unsaturated hydrocarbon, C 5 H 8 , that is readily polymerized; natural rubber (caoutchouc) is cis-1,4-polyisoprene, and trans-1,4-polyisoprene is present in gutta-percha and balata; it is the structural basis for ...