UN1075 PETROLEUM GAS, LIQUEFIED (ISOBUTANE, BUTANE) 2.1 0.250% 1-BUTENE, 0.250% ACETYLENE,0.075% BENZENE, 0.250% METHANE,0.251% ETHANE, 0.250% ETHYLENE, 0.247% CIS-2-BUTENE, 0.503% PROPANE,0.500% PROPYLENE, 2.500% BUTANE,0.078% N-PENTANE, 0.125% HEXANE,0.125% 1-HEXENE, 0.501% CYCLOPROPANE, 0.125% ISO-PENTANE, 0.250% ISOBUTYLENE, 0.250% 2,2 DIMETHYLPROPANE, (NEOPENTANE) 0.249% ALLENE (PROPADIENE), 0.251% TRANS-2-BUTENE, 0.075% TOLUENE, 92.895% ISOBUTANE CERTIFIED, SIZE LP2.5AL LIQUID PHASE CUSTOMER OWNED CYLINDER