Section 05 MINERAL PRODUCTS 27 MINERAL FUELS, MINERAL OILS AND PRODUCTS OF THEIR DISTILLATION; BITUMINOUS SUBSTANCES; MINERAL WAXES 27 11 PETROLEUM GASES AND OTHER GASEOUS HYDROCARBONS. 27 11 13 BUTANES, LIQUEFIED Commodity Code Description 27 11 13 00 BUTANES, LIQUEFIED