UN1075 PETROLEUM GASES,LIQUEFIED 2.1 0.1% METHANE, 0.2% ETHANE, 0.3% ETHYLENE, 1.5% PROPANE, 1% PROPYLENE, 10% ISOBUTANE, 0.7% TRANS-2-BUTENE, 0.6% 1-BUTENE, 0.5% ISOBUTYLENE, 0.4% CIS-2-BUTENE, 0.3% NEOPENTANE, 0.5% ISOPENTANE, 0.4% N-PENTANE, 83.5% N-BUTANE CERTIFIED, SIZE 150AL LIQUID PHASE