(values at 25 o C (77 o F, 298 K) and atmospheric pressure)
|Specific Gravity , air = 1||2.07|
|Specific Volume ( ft 3 /lb, m 3 /kg )||6.5, 0.405|
|Density of liquid at atmospheric pressure ( lb/ft 3 , kg/m 3 )||37.5, 604|
|Vapor pressure at 25 o C ( psia, MN/m 2 )||35.4, 0.244|
|Absolute Viscosity ( lb m /ft s, centipoises )||4.8 10 -6 , 0.007|
|Sound velocity in gas ( m/s )||216|
|Specific Heat - c p - ( Btu/lb o F or cal/g o C, J/kgK )||0.39, 1675|
|Specific Heat Ratio - c p /c v||1.096|
|Gas constant - R - ( ft lb/lb o R, J/kg o C )||26.56, 143|
|Thermal Conductivity ( Btu/hr ft o F, W/m o C )||0.01, 0.017|
|Boiling Point - saturation pressure 14.7 psia and 760 mm Hg - ( o F, o C )||31.2, -0.4|
|Latent Heat of Evaporation at boiling point ( Btu/lb, J/kg )||165.6, 386000|
|Freezing or Melting Point at 1 atm ( o F, o C )||-217, -138|
|Latent Heat of Fusion ( Btu/lb, J/kg )||19.2, 44700|
|Critical Temperature ( o F, o C )||306, 152|
|Critical Pressure ( psia, MN/m 2 )||550, 3.8|
|Critical Volume ( ft 3 /lb, m 3 /kg )||0.070, 0.0043|
|Heat of combustion ( Btu/ft 3 , Btu/lb, kJ/kg )||3300, 21400, 49700|
Follow the links below to get values for the listed properties of butane at varying pressure and temperature :
See also more about atmospheric pressure , and STP - Standard Temperature and Pressure & NTP - Normal Temperature and Pressure ,
as well as Thermophysical properties of: Acetone , Acetylene , Air , Ammonia , Argon , Benzene , Carbon dioxide , Carbon monoxide , Ethane , Ethanol , Ethylene , Helium , Hydrogen , Hydrogen sulfide , Methane , Methanol , Nitrogen , Oxygen , Pentane , Propane , Toluene , Water and Heavy water, D 2 O .
Butane is a gas at standard conditions. However, at lower temperature and/or high pressures the gas becomes a liquid or a solid.
The butane phase diagram shows the phase behavior with changes in temperature and pressure. The curve between the critical point and the triple point shows the butane 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.
Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.
Chemical, physical and thermal properties of acetone, also called 2-propanone, dimethyl ketone and pyroacetic acid. Phase diagram included.
Chemical, physical and thermal properties of benzene, also called benzol. Phase diagram included.
Online calculators, figures and tables showing density and specific weight of liquid and gaseous butane, C4H10, at varying temperarure and pressure, SI and Imperial units.
Online calculators, figures and tables with dynamic and kinematic viscosity of liquid and gaseous butane, C4H10, at varying temperarure and pressure, SI and Imperial units.
Online calculators, figures and tables showing specific heat, Cp and Cv, of gasous and liquid butane, C4H10, at varying temperarure and pressure, SI and Imperial units.
Online calculators, figures and tables showing thermal conductivity of liquid and gaseous butane, C4H10, at varying temperature and pressure, SI and Imperial units.
Heat of combustion (energy content) for som common substances - with examples how to calculate heat of combustion.
Chemical, Physical and Thermal Properties of Ethane - C2H6.
Chemical, physical and thermal properties of ethylene, also called ethene, acetene and olefiant gas. Phase diagram included.
The flash points for some common liquids and fuels.
Adiabatic flame temperatures for common fuel gases - propane, butane, acetylene and more - in air or oxygen atmospheres.
Combustion heat values for gases like acetylene, blast furnace gas, ethane, biogas and more - Gross and Net values.
Higher and lower calorific values (heating values) for fuels like coke, oil, wood, hydrogen and others.
Autoignition points for fuels and chemicals like butane, coke, hydrogen, petroleum and more.
Densities and molecular weights of common gases like acetylene, air, methane, nitrogen, oxygen and others.
Flame and explosion limits for gases like propane, methane, butane, acetylene and more.
Gross heat and net heat values for gases like hydrogen, methane and more.
Specific gravities of air, ammonia, butadiene, carbon dioxide, carbon monoxide and some other common gases.
Vapor pressure vs. temperature for propane, n-butane, n-heptane and n-pentane hydrocarbons.
Liquefied Petroleum - LP - gas properties.
Definition and molecular weight (molar mass) of some common substances.
Chemical, physical and thermal properties of pentane, also called n-pentane. Phase diagram included.
Chemical, physical and thermal properties of propane gas - C3H8.
Evaporation pressure of propane butane mixture vs. temperature.
Triple points for common substances.
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