UN1954 COMPRESSED GAS,FLAMMABLE, N.O.S. (METHANE, ETHANE) 2.1 0.1% HEXANE, 0.1% PROPANE, 0.1% ISOBUTANE, 0.1% N-BUTANE, 0.1% NEOPENTANE,0.1% ISOPENTANE, 0.1% PENTANE, 0.5% NITROGEN, 0.5% CARBON DIOXIDE, 2% ETHANE, 96.3% METHANE CERTIFIED, SIZE LP5