Description COMPONENTS CONCENTRATION NITROGEN 2.40% CARBON DIOXIDE 1.90% METHANE BALANCE ETHANE 4.80% PROPANE 1.00% ISO-BUTANE 0.30% N-BUTANE 0.30% NEOPENTANE - - ISO-PENTANE 0.10% N-PENTANE 0.10% HEXANE 0.08% HEPTANE 0.01%