UN1075 PETROLEUM GASES,LIQUEFIED 2.1 0.05% ETHYLENE, 0.07% ETHANE, 0.07% PROPYLENE, 0.1% PROPANE, 0.07% 1-BUTENE, 0.05% ISOBUTYLENE, 0.07% 1,3 BUTADIENE, 0.1% TRANS-2-BUTENE, 0.07% CIS-2-BUTENE, 0.05% 1-PENTENE, 0.07% PROPADIENE, 0.05% CYCLOPROPANE, 2.0% ISOBUTANE, 0.05% NEOPENTANE, 2.0% ISOPENTANE, 0.5% N-PENTANE RESEARCH BUTANE BALANCE CERTIFIED, 1000CC PISTON CYL CUSTOMER OWNED, LIQUID PHASE