UN1075 PETROLEUM GAS, LIQUEFIED (PROPYLENE, METHANE) 2.1 20 PPM METHANE, 20 PPM ETHANE, 20 PPM ETHYLENE, 20 PPM PROPANE, 20 PPM ACETYLENE, 20 PPM ISOBUTANE, 20 PPM N-BUTANE, 20 PPM PROPADIENE, 20 PPM TRANS-2-BUTENE, 20 PPM 1-BUTENE, 20 PPM ISOBUTENE, 20 PPM CIS-2-BUTENE, 20 PPM ISOPENTANE, 20 PPM METHYL ACETYLENE, 20 PPM N-PENTANE, 20 PPM 1,3 BUTADIENE, RESEARCH PROPYLENE BALANCE CERTIFIED, SIZE LP5 W/DIPTUBE LIQUID PHASE