53APPENDIX II INTERNAL "K" FACTORS CAUTION: K-Factors at best are only an approximation. K factors should notbe used in applications that require accuracy better than +/- 5 to 10%.INDEX ACTUAL GASK FactorRelativeto N2Cp[Cal/g]DENSITY[g/I]0 Air 1.0000 .240 1.2931 Argon Ar 1.4573 .1244 1.7822 Acetylene C2H2 .5829 .4036 1.1623 Ammonia NH3 .7310 .492 .7604 Butane C4H10 .2631 .4007 2.5935 Chlorine Cl 2 .86 .114 3.1636 Carbon Monoxide C O 1.00 .2488 1.2507 Carbon Dioxide CO 2 .7382 .2016 1.9648 Chloroform CHCl3 .3912 .1309 5.3269 Ethane C 2H6 .50 .420 1.34210 Ethylene C 2H4 .60 .365 1.25111 Freon-134A CF3CH2F .5096 .127 4.22412 Fluorine F2 .9784 .1873 1.69513 Fluoroform (Freon-23) CHF3 .4967 .176 3.12714 Helium He 1.454 1.241 .178615 Hydrogen H2 1.0106 3.419 .089916 Hydrogen Chloride HCl 1.000 .1912 1.62717 Hydrogen Sulfide H 2S .80 .2397 1.52018 Hexane C 6H14 .1792 .3968 3.84519 Methane CH4 .7175 .5328 .71520 Neon NE 1.46 .246 .90021 Nitrous Oxide N2O .7128 .2088 1.96422 Nitrogen Dioxide NO2 .737 .1933 2.05223 Nitric Oxide NO .990 .2328 1.33924 Nitrogen Trifluoride NF3 .4802 .1797 3.16825 Oxygen O2 .9926 .2193 1.42726 Ozone .446 .195 2.14427 Propane C3H8 .35 .399 1.96728 Propylene C3H6 .40 .366 1.87729 Sulfur Dioxide SO2 .69 .1488 2.85830 Sulfur Hexafluoride SF6 .2635 .1592 6.51631 Xenon Xe 1.44 .0378 5.858