Propane (data page)

This page provides supplementary chemical data on propane.

Structure and properties

Template:Chembox header | Structure and properties
Dielectric constant	(fluid) 1.6 ε0 at 0 °C
Magnetic susceptibility	−40

Thermodynamic properties

Template:Chembox header | 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)
Template:Chembox header | 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)
Template:Chembox header | 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)
Template:Chembox header | 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	a = 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.

Density-temperature curves for liquid and gaseous propane

Vapor pressure of liquid

Template:Chembox header | P in mm Hg	1	10	40	100	400	760	1520	3800	7600	15200	30400	45600
Template:Chembox header | 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.

File:LogPropaneVaporPressure.png

log of propane vapor pressure. Uses formula: ${\log }_{10}{P}_{mmHg}=6.82973-\frac{813.20}{248.00+T}$ from Lange's Handbook of Chemistry, 10th ed.

Spectral data

Template:Chembox header | UV-Vis
λmax	? nm
Extinction coefficient, ε	?
Template:Chembox header | IR
Major absorption bands	? cm−1
Template:Chembox header | NMR
Proton NMR
Carbon-13 NMR
Other NMR data
Template:Chembox header | 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)

• MSDS from Suburban Propane, L.P dated 5/2013 in the SDSdata.org database

External links

• Physical and Chemical Properties of Propane