UN1954 COMPRESSED GAS,FLAMMABLE, N.O.S. (HYDROGEN, ACETYLENE) 2.1 0.5% NITROGEN, 0.25% METHANE, 0.25% ETHANE, 0.5% ETHYLENE, 2.5% ACETYLENE, 0.25% PROPANE, 0.5% PROPYLENE, 0.25% METHYL ACETYLENE, 0.25% PROPADIENE, 0.5% ISOBUTANE, HYDROGEN BALANCE CERTIFIED, SIZE 150AL