Liquids - Vapor Pressures
Vapor and saturation pressure for some common liquids.
The vapor pressure of a liquid is defined as the pressure exerted by the molecules that escapes from the liquid to form a separate vapor phase above the liquid surface.
The pressure exerted by the vapor phase is called the
- vapor or saturation pressure
Vapor or saturation pressure depends on temperature.
If a fluid consist of more than one component (a solution), components with
- higher vapor pressure are called light components
- lower vapor pressure are called heavy components
Temperature and Vapor or Saturation Pressure for some common Fluids
At atmospheric pressure saturation temperature of
- water : 100 oC (212 oF)
- ethyl alcohol : 78.5 oC (173 oF)
Liquids - Vapor Pressure
Approximate vapor pressure for temperatures in the range 20 oC - 25 oC (68 oF - 77 oF).
Fluid Name | Vapor Pressure (kPa) |
---|---|
Acetaldehyde | 120 |
Acetic acid | 2.1 |
Acetic acid anhydride | 0.68 |
Acetone | 30 |
Allyl alcohol | 2.3 |
Allyl chloride | 40 |
Aluminum nitrate, 10% solution in water | 2.4 |
Aluminum sulphate, 10% solution in water | 2.4 |
Amyl acetate | 0.47 |
Aniline | 0.09 |
Beer | 2.4 |
Benzene | 14 |
Benzyl alcohol | 0.013 |
Bromine | 28 |
Butyl acetate | 1.5 |
Butyl alcohol, 1-butanol | 0.93 |
Butyric acid n | 0.43 |
Calcium chloride, 25% solution in water | 2.4 |
Calcium chloride, 5% solution in water | 2.4 |
Carbon disulphide | 48 |
Carbon tetrachloride | 15.3 |
Chloroform | 26 |
Cyclohexanol | 0.9 |
Cyclohexanone | 0.67 |
Ethyl acetate | 14 |
Ethyl alcohol | 12.4 |
Ethyl glycol | 0.7 |
Ethylene glycol | 0.007 |
Formic acid | 5.7 |
Furfurol, 2-Furaldehyde | 0.3 |
Heptane | 6 |
Hexane | 17.6 |
Isopropyl alcohol (rubbing alcohol) | 4.4 |
Kerosene | 0.7 |
Methyl acetate | 28.8 |
Methyl alcohol, methanol | 16.9 |
Methylene chloride, dichloromethane | 58 |
Milk | 2.4 |
Nitrobenzene | 0.03 |
Nonane | 0.6 |
Octane | 1.9 |
Pentane | 58 |
Phenol | 0.05 |
Propanol | 2.8 |
Propionic acid | 0.47 |
Sea water | 2.4 |
Sodium chloride, 25% solution in water | 2.4 |
Sodium hydroxide, 20% solution in water | 2.4 |
Sodium hydroxide, 30% solution in water | 2.4 |
Styrene | 0.85 |
Tetrachloroethane | 0.7 |
Tetrachloroethylene | 2.5 |
Toluene | 3.8 |
Trichloroethylene | 9.2 |
Water | 2.4 |
- 1 kPa = 103 Pa = 0.145 psi
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Acetone - Thermophysical Properties
Chemical, physical and thermal properties of acetone, also called 2-propanone, dimethyl ketone and pyroacetic acid. Phase diagram included. -
Benzene - Thermophysical properties
Chemical, physical and thermal properties of benzene, also called benzol. Phase diagram included. -
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Chemical, physical and thermal properties of ethylene, also called ethene, acetene and olefiant gas. Phase diagram included. -
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Water - Saturation Pressure vs. Temperature
Online calculator, figures and tables with water saturation (vapor) pressure at temperatures ranging 0 to 370 °C (32 to 700°F) - in Imperial and SI Units. -
Water Boiling Points at Higher Pressures
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