Table B.4 Antoine Equation Constants" B log 10 P* = A - p* in mm Hg, T in °C T+C Example: The vapor pressure of acetaldehyde at 25°C is determined as follows: log10 P₂H40 (25°C) = 8.00552 1600.017 25291.809 = = 2.9551 P₂Ho(25°C) = 102.9551 = 902 mm Hg Compound Formula Range (°C) A B C Acetaldehyde C2H4O -0.2 to 34.4 8.00552 1600.017 291.809 Acetic acid C2H4O2 29.8 to 126.5 7.38782 1533.313 222.309 Acetic acid* C2H4O2 0 to 36 7.18807 1416.7 225 Acetic anhydride C4H6O3 62.8 to 139.4 7.14948 1444.718 199.817 Acetone C3H6O -12.9 to 55.3 7.11714 1210.595 229.664 Acrylic acid C3H4O2 20.0 to 70.0 5.65204 648.629 154.683 Ammonia* NH3 -83 to 60 7.55466 1002.711 247.885 Aniline C6H7N 102.6 to 185.2 7.32010 1731.515 206.049 Benzene C6H6 14.5 to 80.9 6.89272 1203.531 219.888 n-Butane n-C4H10 -78.0 to -0.3 6.82485 943.453 239.711 i-Butane i-C4H10 -85.1 to -11.6 6.78866 899.617 241.942 1-Butanol C4H10O 89.2 to 125.7 7.36366 1305.198 173.427 2-Butanol C4H10O 72.4 to 107.1 7.20131 1157.000 168.279 1-Butene C4H8 -77.5 to -3.7 6.53101 810.261 228.066 Butyric acid C4H8O2 20.0 to 150.0 8.71019 2433.014 255.189 Carbon disulfide CS2 3.6 to 79.9 6.94279 1169.110 241.593 Carbon tetrachloride CCl4 14.1 to 76.0 6.87926 1212.021 226.409 Chlorobenzene C6H5Cl 62.0 to 131.7 6.97808 1431.053 Chlorobenzene* C6H5Cl 0 to 42 7.10690 1500.0 217.550 224.0 Chlorobenzene* C6H5Cl 42 to 230 6.94504 1413.12 216.0 Chloroform CHCl3 -10.4 to 60.3 6.95465 1170.966 226.232 Chloroform* - CHCl3 -30 to 150 6.90328 1163.03 227.4 Cyclohexane C6H12 19.9 to 81.6 6.84941 1206.001 223.148 Cyclohexanol C6H12O 93.7 to 160.7 6.25530 912.866 109.126 n-Decane n-C10H22 94.5 to 175.1 6.95707 1503.568 194.738 1-Decene 1,1-Dichloroethane 1,2-Dichloroethane C10 H20 86.8 to 171.6 6.95433 1497.527 197.056 C2H4Cl₂ -38.8 to 17.6 6.97702 1174.022 229.060 C2H4Cl -30.8 to 99.4 7.02530 1271.254 222.927 Dichloromethane CH2Cl2 -40.0 to 40 7.40916 1325.938 252.616 Diethyl ether C4H10O -60.8 to 19.9 6.92032 1064.066 228.799 Diethyl ketone C5H10O 56.5 to 111.3 7.02529 1310.281 214.192 Diethylene glycol C4H10O2 130.0 to 243.0 7.63666 1939.359 162.714 Dimethyl ether C2H6O -78.2 to -24.9 6.97603 889.264 241.957 Dimethylamine C₂H7N -71.8 to 6.9 7.08212 960.242 221.667 N,N-Dimethylformamide C3H7NO 30.0 to 90.0 6.92796 1400.869 196.434 1,4-Dioxane C4H8O2 20.0 to 105.0 7.43155 1554.679 240.337 Ethanol C2H6O Ethanolamine Ethyl acetate Ethyl acetate* C₂H₂NO C4H8O2 C4H8O2 19.6 to 93.4 65.4 to 170.9 15.6 to 75.8 -20 to 150 8.11220 1592.864 226.184 7.45680 1577.670 173.368 7.10179 1244.951 217.881 7.09808 1238.710 217.0 Ethyl chloride Ethylbenzene C₂H5Cl -55.9 to 12.5 6.98647 1030.007 238.612 C8H10 56.5 to 137.1 6.95650 1423.543 213.091 "Adapted from T. Boublik, V. Fried, and E. Hala, The Vapour Pressures of Pure Substances, Elsevier, Amsterdam, 1973. If marked with an asterisk (*), constants are from Lange's Handbook of Chemistry, 9th Edition, Handbook Publishers, Inc., Sandusky, OH, 1956. Table B.4 (Continued) Physical Property Tables 641 Compound Formula Ethylene glycol Range (°C) B C Ethylene oxide C2H6O2 50.0 to 200.0 1,2-Ethylenediamine C2H4O 0.3 to 31.8 Formaldehyde C₂H8N2 HCHO Formic acid 26.5 to 117.4 -109.4 to -22.3 Glycerol CH₂O2 37.4 to 100.7 n-Heptane C3H8O3 183.3 to 260.4 i-Heptane 1-Heptene n-Hexane n-C7H16 25.9 to 99.3 8.09083 2088.936 203.454 8.69016 2005.779 334.765 7.16871 1336.235 194.366 7.19578 970.595 244.124 7.58178 1699.173 6.16501 1036.056 28.097 6.90253 1267.828 216.823 260.714 i-C7H16 18.5 to 90.9 6.87689 1238.122 219.783 C7H14 21.6 to 94.5 6.91381 1265.120 220.051 n-C6H14 i-Hexane 13.0 to 69.5 6.88555 1175.817 224.867 i-C6H14 1-Hexene 12.8 to 61.1 6.86839 1151.401 228.477 C6H12 Hydrogen Cyanide 15.9 to 64.3 6.86880 1154.646 226.046 HCN -16.4 to 46.2 Methanol 7.52823 1329.49 260.418 CH3OH 14.9 to 83.7 8.08097 1582.271 239.726 Methanol* CH3OH -20 to 140 7.87863 1473.11 230.0 Methyl acetate C3H6O2 1.8 to 55.8 7.06524 1157.630 219.726 Methyl bromide CH3Br -70.0 to 3.6 7.09084 1046.066 244.914 Methyl chloride CH3Cl -75.0 to 5.0 7.09349 948.582 249.336 Methyl ethyl ketone C4H8O 42.8 to 88.4 7.06356 1261.339 221.969 Methyl isobutyl ketone C6H12O 21.7 to 116.2 6.67272 1168.408 191.944 Methyl methacrylate C5H8O2 39.2 to 89.2 8.40919 2050.467 274.369 Methylamine CH,N -83.1 to -6.2 7.33690 1011.532 233.286 Methylcyclohexane C7H14 25.6 to 101.8 6.82827 1273.673 221.723 Naphthalene C10 H8 80.3 to 179.5 7.03358 1756.328 204.842 Nitrobenzene C6H5 NO₂ 134.1 to 210.6 7.11562 1746.586 201.783 Nitromethane CH3NO₂ 55.7 to 136.4 7.28166 1446.937 227.600 n-Nonane n-C9H20 70.3 to 151.8 1-Nonene C9H18 66.6 to 147.9 n-Octane n-C8H18 52.9 to 126.6 i-Octane i-C8H18 41.7 to 118.5 1-Octene C8H16 44.9 to 122.2 n-Pentane n-CsH12 i-Pentane i-C5H12 13.3 to 36.8 16.3 to 28.6 1-Pentanol C5H12O 74.7 to 156.0 6.93764 1430.459 201.808 6.95777 1437.862 205.814 6.91874 1351.756 209.100 6.88814 1319.529 211.625 6.93637 1355.779 213.022 6,84471 1060.793 231.541 6.73457 992.019 229.564 7.18246 1287.625 161.330 1-Pentene C5H10 12.8 to 30.7 6.84268 1043.206 233.344 Phenol C6H6O 107.2 to 181.8 1-Propanol C3H8O 60.2 to 104.6 2-Propanol C3H8O 52.3 to 89.3 Propionic acid C3H6O2 72.4 to 128.3 Propylene oxide C3H6O -24.2 to 34.8 Pyridine C5H5N 67.3 to 152.9 Styrene C8H8 Toluene C7H8 29.9 to 144.8 35.3 to 111.5 1,1,1-Trichloroethane C2H3Cl3 -5.4 to 16.9 7.13301 1516.790 174.954 7.74416 1437.686 198.463 7.74021 1359.517 197.527 7.71423 1733.418 217.724 7.01443 1086.369 228.594 7.04115 1373.799 214.979 7.06623 1507.434 214.985 6.95805 1346.773 219.693 8.64344 2136.621 302.769 1,1,2-Trichloroethane C2H3C13 Trichloroethylene C₂HCl3 Vinyl acetate C4H6O2 50.0 to 113.7 17.8 to 86.5 21.8 to 72.0 6.95185 1314.410 209.197 6.51827 1018.603 192.731 Water* H₂O 0 to 60 Water* H₂O 60 to 150 m-Xylene m-C8H10 o-Xylene p-Xylene 0-C8H10 p-C8H10 59.2 to 140.0 63.5 to 145.4 58.3 to 139.3 7.21010 1296.130 226.655 8.10765 1750.286 235.000 7.96681 1668.210 228.000 7.00646 1460.183 214.827 7.00154 1476.393 213.872 6.98820 1451.792 215.111