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Butane - Thermophysical Properties

Chemical, physical and thermal properties of n-Butane

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Chemical, physical and thermal properties of n-Butane  - C4H10 :

Molecular Weight 58.12
Specific Gravity, air = 1 2.07
Specific Volume (ft3/lb, m3/kg) 6.5, 0.405
Density of liquid at atmospheric pressure (lb/ft3, kg/m3) 37.5, 604
Vapor pressure at 25oC (psia, MN/m2) 35.4, 0.244
Absolute Viscosity (lbm/ft s, centipoises) 4.8 10-6, 0.007
Sound velocity in gas (m/s) 216
Specific Heat - cp - (Btu/lboF or cal/goC, J/kgK) 0.39, 1675
Specific Heat Ratio - cp/cv 1.096
Gas constant - R - (ft lb/lboR, J/kgoC) 26.56, 143
Thermal Conductivity (Btu/hr ft oF, W/moC) 0.01, 0.017
Boiling Point - saturation pressure 14.7 psia and 760 mm Hg - (oF, oC) 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 (oF, oC) -217, -138
Latent Heat of Fusion (Btu/lb, J/kg) 19.2, 44700
Critical Temperature (oF, oC) 306, 152
Critical Pressure (psia, MN/m2) 550, 3.8
Critical Volume (ft3/lb, m3/kg) 0.070, 0.0043
Flammable yes
Heat of combustion (Btu/ft3, Btu/lb, kJ/kg) 3300, 21400, 49700
  •  values at 25oC (77oF, 298 K) and atmospheric pressure

See also more about atmospheric pressure, and STP - Standard Temperature and Pressure & NTP - Normal Temperature and Pressure, as well as Thermophysical properties of:
AcetyleneAir, Ammonia, Argon, Carbon dioxide, Carbon monoxide, Ethane, Ethanol, Helium, Hydrogen, Methane, MethanolNitrogen, Oxygen, Propane, Water and Heavy water, D2O.

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  • es: n butano C4H10
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