Gases (petroleum), extractive, C3-5, butene-isobutylene-rich

Gases (petroleum), extractive, C3-5, butene-isobutylene-rich is a complex combination of hydrocarbons obtained from extractive distillation of saturated and unsaturated aliphatic hydrocarbons usually ranging in carbon numbers from C3 through C5, predominantly C4. It consists of saturated and unsaturated hydrocarbons having carbon numbers predominantly in the range of C3 through C5, predominantly butenes and isobutylene.

Extremely flammable