Liquids - Vapor Pressures
Vapor and saturation pressure for some common liquids.
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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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Related Documents
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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. -
Ethylene - Thermophysical Properties
Chemical, physical and thermal properties of ethylene, also called ethene, acetene and olefiant gas. Phase diagram included. -
Moist Air - Vapor Pressure
Vapor pressures vs. dry and wet bulb temperatures in moist air. -
Moist Air - Water Vapor and Saturation Pressure
Saturation pressure of water vapor in moist air vs. temperature. -
Propane - Vapor Pressure vs. Temperature
Vapor pressure vs. temperature. -
Propane Butane Mixture - Evaporation Pressure
Evaporation pressure of propane butane mixture vs. temperature. -
Removing Heat with Air
Calculating heat removed with air by measuring the wet bulb temperature. -
Saturated Steam - Properties for Pressure in Bar
Saturated Steam Table with properties like boiling point, specific volume, density, specific enthalpy, specific heat and latent heat of vaporization. -
Water - Saturation Pressure and Specific Weight vs. Temperature
Vapor pressure and specific weight of water at temperatures ranging 32 to 212 oF - Imperial Units. -
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
Online calculator, figures and tables showing boiling points of water at pressures ranging from 14.7 to 3200 psia (1 to 220 bara). Temperature given as °C, °F, K and °R.
