Antoine Equation Coefficient for pure substances
Including water, acetone, methanol, benzene, phenol
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1. How to use Antoine Equation coefficients
1. How to use Antoine Equation coefficients
The coefficients given in the table below allow to calculate the saturation pressure of the pure substances listed, in mmHg, from the temperature in degree celsius.
They are parameters for a modelisation of the saturation pressure as a function of the temperature following an Antoine Law. Note that the Antoine equation is expressed for the coefficients given in this page as a Log in base 10.
Equation 1 : Antoine Equation for calculation of saturation pressure - log base 10
2. Table of coefficients of Antoine Equation for pure compounds
Note the domain of validity of the correlation, in between Tmin and Tmax. The saturation pressure is in mmHg and the temperature in celsius. The classification in the table is done by alphabetical order of the compound name. No guarantee is given on the data provided, the user is strongly advised to double check the information provided with other sources.
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It is possible to switch from mmHg - or Torr- to other units by multiplying by the following coefficients :
| (Pa) | (bar) | (at) | (atm) | (Torr) | (lbf/in2) | |
| 1 Torr | 133.322 368 421 | 0.001 333 224 | 0.001 359 51 | 1/760 ≈ 0.001 315 789 | 1 Torr ≈ 1 mmHg | 0.019 336 775 |
| Formula | Compound Name | A | B | C | TMIN | TMAX |
| C3H6O | acetone | 7.2316 | 1277.03 | 237.23 | -32 | 77 |
| C2H4O2 | acetic-acid | 7.2996 | 1479.02 | 216.82 | 17 | 157 |
| C2H3N | acetonitrile | 7.0735 | 1279.2 | 224.01 | -13 | 117 |
| C6H6 | benzene | 6.90565 | 1211.033 | 220.79 | -16 | 104 |
| C4H10 | butane | 6.80896 | 935.86 | 238.73 | -78 | 19 |
| CCL4 | carbon-tetrachloride | 6.8941 | 1219.58 | 227.17 | -20 | 101 |
| C6H5CL | chlorobenzene | 6.9781 | 1431.05 | 217.56 | 47 | 147 |
| C4H9CL | 1-chlorobutane | 6.9379 | 1227.43 | 224.11 | -18 | 112 |
| C4H9CL | 2-chlorobutane | 6.9447 | 1195.8 | 226.01 | -23 | 102 |
| CHCL3 | chloroform | 6.9371 | 1171.2 | 227 | -13 | 97 |
| C6H12 | cyclohexane | 6.8413 | 1201.531 | 222.647 | 6 | 105 |
| C5H10 | cyclopentane | 6.88676 | 1124.162 | 231.361 | -40 | 72 |
| C10H22 | decane | 6.96375 | 1508.75 | 195.374 | 58 | 203 |
| CH2CL2 | dichloromethane | 7.0803 | 1138.91 | 231.46 | -44 | 59 |
| C4H10O | ethyl-ether | 6.92032 | 1064.07 | 228.8 | -61 | 20 |
| C4H8O2 | p-dioxane | 7.0063 | 1288.5 | 211.01 | 2 | 137 |
| C20H42 | eicosane | 7.1522 | 2032.7 | 132.1 | 198 | 379 |
| C2H6O | Ethyl-alcohol (ethanol) | 8.2133 | 1652.05 | 231.48 | -3 | 96 |
| C8H10 | ethylbenzene | 6.95719 | 1424.255 | 213.206 | 26 | 163 |
| C2H6O2 | ethylene-glycol | 8.7945 | 2615.4 | 244.91 | 91 | 221 |
| C7H16 | heptane | 6.89385 | 1264.37 | 216.636 | -2 | 123 |
| C6H14 | hexane | 6.87024 | 1168.72 | 224.21 | -25 | 92 |
| CH4O | methanol | 8.0724 | 1574.99 | 238.87 | -16 | 91 |
| C4H8O2 | ethyl-acetate | 7.0146 | 1211.9 | 216.01 | -13 | 112 |
| CH3NO2 | nitromethane | 7.044 | 1291 | 209.01 | 5 | 136 |
| C9H20 | nonane | 6.9344 | 1429.46 | 201.82 | 39 | 179 |
| C8H18 | octane | 6.9094 | 1349.82 | 209.385 | 19 | 152 |
| C5H12 | pentane | 6.87632 | 1075.78 | 233.205 | -50 | 58 |
| C6H6O | phenol | 7.1345 | 1516.07 | 174.57 | 72 | 208 |
| H20 | Water | 8.07131 | 1730.63 | 233.426 | 1 | 100 |
3. Excel data table
You can download the table above in Excel format here : Excel data table. You can modify the calculation temperature and it calculates the saturation pressure for all the compounds in the table.
Warning : this calculator is provided to illustrate the concepts mentioned in this webpage, it is not intended for detail design. It is not a commercial product, no guarantee is given on the results. Please consult a reputable designer for all detail design you may need.
