UN1075 PETROLEUM GAS, LIQUEFIED (N-BUTANE, ISOBUTANE) 2.1 0.25% METHANE, 0.25% CARBON DIOXIDE, 0.25% ETHANE, 0.25% PROPANE, 2.4% ISOBUTANE, 2.0% ISOPENTANE, 0.5% N-PENTANE, 0.25% HEXANES PLUS, N-BUTANE BALANCE CERTIFIED, 1000CC PISTON, LIQUID PHASE CUSTOMER OWNED CYLINDER