Fermat point

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 point	85.47 K (-187.68 °C), 0.1 × 10–3 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	15.7 kJ/mol
Std entropy change of vaporization, ΔvapSo	? J/(mol·K)
Solid properties
Std enthalpy change of formation, ΔfHosolid	? 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	–2202.0 kJ/mol
Heat capacity, cp	73.60 J/(mol K)
van der Waals' constants	a = 877.88 L2 kPa/mol2 b = 0.08445 liter per mole

Vapor pressure of liquid

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: $\scriptstyle \log _{10}P_{mmHg}=6.82973-{\frac {813.20}{248.00+T}}$ from Lange's Handbook of Chemistry, 10th ed.

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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 asphyxiaton. The National Propane Gas Association has a generic MSDS available online here.

References

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Except where noted otherwise, data relate to standard ambient temperature and pressure.

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