40 C.F.R. Table 1 to Subpart Ja of Part 60
Molar Exhaust Volumes and Molar Heat Content of Fuel Gas Constituents
Cite as 40 C.F.R. Table 1 to Subpart Ja of Part 60 (2026)
Constituent MEV a dscf/mol MHC b Btu/mol Methane (CH 4 ) 7.29 842 Ethane (C 2 H 6 ) 12.96 1,475 Hydrogen (H 2 ) 1.61 269 Ethene (C 2 H 4 ) 11.34 1,335 Propane (C 3 H 8 ) 18.62 2,100 Propene (C 3 H 6 ) 17.02 1,947 Butane (C 4 H 10 ) 24.30 2,717 Butene (C 4 H 8 ) 22.69 2,558 Inerts 0.85 0 a MEV = molar exhaust volume, dry standard cubic feet per gram-mole (dscf/g-mol) at standard conditions of 68 °F and 1 atmosphere. b MHC = molar heat content (higher heating value basis), Btu per gram-mole (Btu/g-mol). [77 FR 56480, Sep. 12, 2012]