This page provides supplementary chemical data on propane.

Structure and properties

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

Thermodynamic properties

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Phase behavior
Triple point 85.47 K (−187.68 °C), 0.0001 Pa
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[1] 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, cp 98.36 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, cp 73.60 J/(mol K)
van der Waals' constants[2] a = 877.88 L2 kPa/mol2
b = 0.08445 liter per mole

Density of liquid and gas

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Propane is highly temperature dependent.[3] The density of liquid and gaseous propane are given on the next image.

 

Vapor pressure of liquid

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P in mm Hg 1 10 40 100 400 760 1520 3800 7600 15200 30400 45600
T in °C −128.9 −108.5 −92.4 −79.6 −55.6 −42.1 −25.6 1.4 25.6 58.1 94.8  —


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

 
log of propane vapor pressure. Uses formula:   from Lange's Handbook of Chemistry, 10th ed.

Spectral data

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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

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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

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  1. ^ Himmelblau. Basic Principles and Calculations in Chemical Engineering. Pearson. 2012. Print. Pg. 852.
  2. ^ Lange's Handbook of Chemistry 10th ed, pp 1522–1524
  3. ^ 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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