This page provides supplementary chemical data on propane.

Structure and properties

Structure and properties
Dielectric constant(fluid) 1.6 ε0 at 0 °C
Magnetic susceptibility−40

Thermodynamic properties

Phase behavior
Triple point85.47 K (−187.68 °C), 0.000169 Pa
Critical point369.522 K (96.672 °C), 42.4924 bar
Std enthalpy change of fusion, ΔfusHo79.96 J/g
Std entropy change of fusion, ΔfusSo? J/(mol·K)
Std enthalpy change of vaporization, ΔvapHo24.545 kJ/mol
Std entropy change of vaporization, ΔvapSo? J/(mol·K)
Solid properties
Std enthalpy change of formation, ΔfHosolid−103.85 kJ/mol
Standard molar entropy, Sosolid? J/(mol K)
Heat capacity, cp? J/(mol K)
Liquid properties
Std enthalpy change of formation, ΔfHoliquid−118.910 kJ/mol
Standard molar entropy, Soliquid171.0 J/(mol K)
Heat capacity, cp98.36 J/(mol K)
Gas properties
Std enthalpy change of formation, ΔfHogas−104.7 kJ/mol
Standard molar entropy, Sogas269.91 J/(mol K)
Enthalpy of combustion, ΔcHo−2220.0 kJ/mol
Heat capacity, cp73.60 J/(mol K)
van der Waals' constantsa = 877.88 L2 kPa/mol2 b = 0.08445 liter per mole

Density of liquid and gas

Propane is highly temperature dependent. The density of liquid and gaseous propane are given on the next image.

Vapor pressure of liquid

P in mm Hg11040100400760152038007600152003040045600
T in °C−128.9−108.5−92.4−79.6−55.6−42.1−25.61.425.658.194.8—

Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.

log of propane vapor pressure. Uses formula: log 10 ⁡ P m m H g = 6.82973 − 813.20 248.00 + T {\displaystyle \scriptstyle \log _{10}P_{mmHg}=6.82973-{\frac {813.20}{248.00+T}}} from Lange's Handbook of Chemistry, 10th ed.

Spectral data

UV-Vis
λmax? nm
Extinction coefficient, ε?
IR
Major absorption bands? cm−1
NMR
Proton NMR
Carbon-13 NMR
Other NMR data
MS
Masses of main fragments

Material Safety Data Sheet

Propane does not have health effects other than the danger of frostbite or asphyxiation. The National Propane Gas Association has a generic MSDS available (Issued 1996)

  • dated 5/2013 in the SDSdata.org database

External links