Propane (data page)

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This page provides supplementary chemical data on propane.

Contents

Structure and properties

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

Thermodynamic properties

Phase behavior
Triple point 85.47 K (−187.68 °C), 0.000169 Pa [1]
Critical point 369.522 K (96.672 °C), 42.4924 bar
Std enthalpy change
of fusion, ΔfusHo		79.96 J/g
Std entropy change
of fusion, ΔfusSo		? J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo		24.545 kJ/mol
Std entropy change
of vaporization, ΔvapSo		? J/(mol·K)
Solid properties
Std enthalpy change
of formation, ΔfHosolid		−103.85 [2] 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,
Soliquid		171.0 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,
Sogas		269.91 J/(mol K)
Enthalpy of combustion, ΔcHo−2220.0 kJ/mol
Heat capacity, cp73.60 J/(mol K)
van der Waals' constants [3] a = 877.88 L2 kPa/mol2
b = 0.08445 liter per mole

Density of liquid and gas

Propane is highly temperature dependent. [4] The density of liquid and gaseous propane are given on the next image.

Propane butane liquid vapor density zivenko.png

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. LogPropaneVaporPressure.png
log of propane vapor pressure. Uses formula: 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 online here. (Issued 1996)

  This box:
  

References

  1. ↑ Informatics, NIST Office of Data and. "Propane". webbook.nist.gov. Retrieved 30 January 2026.
  2. ↑ Himmelblau. Basic Principles and Calculations in Chemical Engineering. Pearson. 2012. Print. Pg. 852.
  3. ↑ Lange's Handbook of Chemistry 10th ed, pp 1522–1524
  4. ↑ Zivenko, Oleksiy (2019). "LPG Accounting Specificity During ITS Storage and Transportation". Measuring Equipment and Metrology. 80 (3): 21–27. doi: 10.23939/istcmtm2019.03.021 . ISSN   0368-6418. S2CID   211776025.

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