UN 1954 COMPRESSED FLAMMABLE GAS,, N.O.S. (MIXTURE: NITROGEN, CO2, ETHANE, PROPANE, ISOBUTANE, BUTANE, ISOPENTANE, PENTHANE, HEXANE, OXYGEN, METHANE BALANCE) CLASS 2.1 PG: N/A, FLASH POINT NONE NOT MARINE POLLUTANT