Brown, G. N., Jr., Ziegler, W. T., 1980, "Vapor pressure and heats of vaporization and sublimation of liquids and solids of interest in cryogenics below 1-atm pressure" Adv. Crog. Eng., 25, 662-670. Table 1. Entered by Leslie Young, SwRI, Apr 10, 2011 (layoung@boulder.swri.edu). Substance Physical_State Temerature Range (K) Pressure Range, torr Polynomial designation --------- -------------- -------------------- --------------------- ---------------------- p-H2 liquid 22 13.813 1223.23 52.89 (p-H2)1 p-H2 solid 13.813 1.0 5.289e1 8.255e-39 (p-H2)2 O2 liquid 100 54.532 1908.43 1.098 (O2)1 O2 gamma-solid 54.532 43.772 1.098 1.2937e-2 (O2)2 O2 beta-solid 43.772 23.781 1.2937e-2 7.24e-12 (O2)3 O2 alpha-solid 23.781 20.0 7.24e-12 1.007e-15 (O2)4 N2 liquid 77.347 63.152 760 94.120 (N2)1 N2 beta-solid 63.152 35.62 94.12 3.147e-3 (N2)2 N2 alpha-solid 35.62 10 3.147e-3 1.062e-30 (N2)3 F2 liquid 85.03 53.54 760 1.919 (F2)1 F2 beta-solid 53.54 45.55 1.919 7.86e-2 (F2)2 F2 alpha-solid 45.55 14.0 7.86e-2 7.86e-25 (F2)3 CO liquid 81.638 68.127 760 1.155e2 (CO)1 CO beta-solid 68.127 61.544 115.5 28.09 (CO)2 CO alpha-solid 61.544 14.0 28.09 1.473e-23 (CO)3 CO2 solid 194.694 40.0 760 7.16e-26 (CO2)1 Ne liquid 30 24.552 760 3.224e+2 (Ne)1 Ne solid 24.552 12.5 3.224e+2 1.292e-2 (Ne)2 Ne solid 13.3 3.7 4.383e-2 1.456e-22 (Ne)3 Ar liquid 88.00 83.80 818.68 516.84 (Ar)1 Ar solid 83.80 20.0 516.84 4.54e-14 (Ar)2 Kr liquid 119.786 115.76 760 547.92 (Kr)1 Kr solid 115.76 12.0 547.92 1.73e-42 (Kr)2 Xe liquid 165.02 161.37 760 612.45 (Xe)1 Xe solid 161.37 20.0 612.45 1.05e-34 (Xe)2 CH4 liquid 111.648 90.64 760 87.625 (CH4)1 CH4 solid 90.64 20.4 87.625 1.89e-18 (CH4)2 C2H4 liquid 169.40 103.97 760 9.11e-1 (C2H4)1 C2H4 solid 103.97 20. 9.11e-1 8.32e-43 (C2H4)2 C2H6 liquid 184.52 89.89 760 7.33e-3 (C2H6)1 C2H6 solid 89.89 20.0 7.33e-3 1.04e-45 (C2H6)2