Phase diagram of propane
Chemical, physical and thermal properties of Propane- C3 H 8 :
(values at 25 oC (77 oF, 298 K) and atmospheric pressure)
Propane - Thermophysical properties| Molecular Weight | 44.097 |
| Specific Gravity of gas (air = 1) | 1.52 |
| Specific Volume ( ft3 /lb, m3 /kg ) | 8.84, 0.552 |
| Density of liquid at atmospheric pressure ( lb/ft3, kg/m3 ) | 36.2, 580 |
| Vapor pressure at 25 oC ( psia, MN/m2 ) | 135.7, 0.936 |
| Absolute Viscosity ( lbm /ft s, centipoises ) | 5.38 10-6, 0.0074 |
| Sound velocity in gas ( m/s ) | 253 |
| Specific Heat - cp - ( Btu/lb oF or cal/g oC, J/kgK ) | 0.39, 1630 |
| Specific Heat Ratio - cp /cv | 1.13 |
| Gas constant - R - ( ft lb/lb o R, J/kg oC ) | 35.0, 188 |
| Thermal Conductivity ( Btu/hr ft oF, W/m oC ) | 0.010, 0.017 |
| Boiling Point - saturation pressure 14.7 psia and 760 mm Hg - ( oF, oC ) | -44, -42.2 |
| Latent Heat of Evaporation at boiling point ( Btu/lb, J/kg ) | 184, 428000 |
| Freezing or Melting Point at 1 atm ( oF, oC ) | -309.8, -189.9 |
| Latent Heat of Fusion ( Btu/lb, J/kg ) | 19.1, 44400 |
| Critical Temperature ( oF, oC ) | 205, 96 |
| Critical Pressure ( psia, MN/m2 ) | 618, 4.26 |
| Critical Volume ( ft3 /lb, m3 /kg ) | 0.073, 0.0045 |
| Flammable | yes |
| Heat of combustion ( Btu/ft3, Btu/lb, kJ/kg ) | 2450, 21660, 50340 |
See the following documents for changes in propane properties with changes in pressure and temperature :
- Density and Specific Weight
- Dynamic and Kinematic Viscosity
- Prandtl Number
- Specific Heat (Heat Capacity)
- Thermal Conductivity
- Thermal Diffusivity
- Vapor Pressure at Gas-Liquid Equilibrium
See also more about atmospheric pressure , and ,
as well as Thermophysical properties of: Acetone , Acetylene , Air , Ammonia , Argon , Benzene , Butane , Carbon dioxide , Carbon monoxide , Ethane , Ethanol , Ethylene , Helium , Hydrogen , Hydrogen sulfide , Methane , Methanol , Nitrogen , Oxygen , Pentane , Toluene , Water and Heavy water, D2O . Propane is a gas at standard conditions. However, at low temperature and/or high pressures the gas becomes a liquid (or a solid at very cold conditions).
The phase diagram for propane shows the phase behavior with changes in temperature and pressure. The curve between the critical point and the triple point shows the propane boiling point with changes in pressure. It also shows the saturation pressure with changes in temperature.
At the critical point there is no change of state when pressure is increased or if heat is added.
The triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium.
Acetone - Thermophysical Properties
Chemical, physical and thermal properties of acetone, also called 2-propanone, dimethyl ketone and pyroacetic acid. Phase diagram included.Adiabatic Flame Temperatures
Adiabatic flame temperatures for hydrogen, methane, propane and octane - in Kelvin.Benzene - Thermophysical properties
Chemical, physical and thermal properties of benzene, also called benzol. Phase diagram included.Butane - Thermophysical Properties
Chemical, physical and thermal properties of n-Butane.Combustion Heat
Heat of combustion (energy content) for som common substances - with examples how to calculate heat of combustion.Energy Content in common Energy Sources
Heating fuels and their energy content.Ethane - Thermophysical Properties
Chemical, Physical and Thermal Properties of Ethane - C2H6.Ethylene - Thermophysical Properties
Chemical, physical and thermal properties of ethylene, also called ethene, acetene and olefiant gas. Phase diagram included.Fuel Gases - Flame Temperatures
Adiabatic flame temperatures for common fuel gases - propane, butane, acetylene and more - in air or oxygen atmospheres.Fuel Gases - Heating Values
Combustion heat values for gases like acetylene, blast furnace gas, ethane, biogas and more - Gross and Net values.Fuels - Higher and Lower Calorific Values
Higher and lower calorific values (heating values) for fuels like co*ke, oil, wood, hydrogen and others.Fuels and Chemicals - Autoignition Temperatures
Autoignition points for fuels and chemicals like butane, co*ke, hydrogen, petroleum and more.Gases - Explosion and Flammability Concentration Limits
Flame and explosion limits for gases like propane, methane, butane, acetylene and more.Gases - Gross and Net Heat Values
Gross heat and net heat values for gases like hydrogen, methane and more.Hydrocarbons - Vapor Pressures
Vapor pressure vs. temperature for propane, n-butane, n-heptane and n-pentane hydrocarbons.Liquids - Dynamic Viscosities
Absolute (dynamic) viscosity values for some common fluids.LPG - Gas Properties
Liquefied Petroleum - LP - gas properties.Pentane - Thermophysical Properties
Chemical, physical and thermal properties of pentane, also called n-pentane. Phase diagram included.Propane - Density and Specific Weight vs. Temperature and Pressure
Online calculator, figures and tables showing density and specific weight of propane, C3H8, at temperatures ranging from -187 to 725 °C (-305 to 1300 °F) at atmospheric and higher pressure - Imperial and SI Units.Propane - Dynamic and Kinematic Viscosity vs. Temperature and Pressure
Online calculators, figures and tables showing dynamic and kinematic viscosity of liquid and gaseous propane at varying temperarure and pressure, SI and Imperial units.Propane - Latent Heat of Vaporization vs. Temperature
Latent heat with vaporized propane.Propane - Prandtl Number vs. Temperature and Pressure
Figures and tables with Prandtl Number of liquid and gaseous propane at varying temperarure and pressure, SI and Imperial units.Propane - Thermal Conductivity vs. Temperature and Pressure
Online calculator, figures and tables showing thermal conductivity of liquid and gaseous propane at varying temperarure and pressure, SI and Imperial units.Propane - Thermal Diffusivity vs. Temperature and Pressure
Figures and tables showing thermal diffusivity of liquid and gaseous propane at varying temperarure and pressure, SI and Imperial units.Propane - Vapor Pressure vs. Temperature
Vapor pressure vs. temperature.Propane Butane Mixture - Evaporation Pressure
Evaporation pressure of propane butane mixture vs. temperature.Propane Gas - Sizing of Pipe Lines
Sizing low pressure propane gas pipe lines - Metric units.Propane Gas Piping - Capacity vs. Size
Sizing of propane gas pipe lines with pressures above 5 psig (35 kPa).Propane Gas Piping - Low Pressure Capacity vs. Size
Sizing of low pressure propane gas pipe lines - Imperial units.
