UN1954 COMPRESSED GAS, N.O.S. (HYDROGEN, METHANE) 2.1 0.5% ARGON, 4% NITROGEN, 0.10% HYDROGEN SULFIDE, 3% CARBON DIOXIDE, 9% METHANE, 6% ETHANE, 1% ETHYLENE, 1% ACETYLENE, 5% PROPANE, 1% PROPYLENE, 0.8% PROPADIENE, 2% ISOBUTANE, 2% N-BUTANE, 1% ISOBUTYLENE, 2% 1,3-BUTADIENE, 1% CIS-2-BUTENE, 1% TRANS-2-BUTENE, 1% 1-BUTENE, 1% ISOPENTANE, 1% N-PENTANE, 0.5% 2-METHYL-1-BUTENE, 0.5% 1-PENTENE, 0.7% N-HEXANE, HYDROGEN BALANCE CERTIFIED, SIZE 150AL CUSTOMER OWNED CYLINDER