title: Propane (data page)
text: # Propane (data page)
  
  This page provides supplementary chemical data on propane.
  
  ## Structure and properties
  
  Structure and properties :
  
  | Dielectric constant | (fluid) 1.6 $ε_0$ at 0 °C |
  | - | - |
  | Magnetic susceptibility | −40 |
  
  ## Thermodynamic properties
  
  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, $Δ_{fus}H^o$ | 79.96 J/g |
  | Std entropy change of fusion, $Δ_{fus}S^o$ | ? J/(mol·K) |
  | Std enthalpy change of vaporization, $Δ_{vap}H^o$ | 24.545 kJ/mol |
  | Std entropy change of vaporization, $Δ_{vap}S^o$ | ? J/(mol·K) |
  | Solid properties ||
  | Std enthalpy change of formation, $Δ_fH^o_{solid}$ | −103.85 kJ/mol |
  | Standard molar entropy, $S^o_{solid}$ | ? J/(mol K) |
  | Heat capacity, $c_p$ | ? J/(mol K) |
  | Liquid properties ||
  | Std enthalpy change of formation, $Δ_fH^o_{liquid}$ | −118.910 kJ/mol |
  | Standard molar entropy, $S^o_{liquid}$ | 171.0 J/(mol K) |
  | Heat capacity, $c_p$ | 98.36 J/(mol K) |
  | Gas properties ||
  | Std enthalpy change of formation, $Δ_fH^o_{gas}$ | −104.7 kJ/mol |
  | Standard molar entropy, $S^o_{gas}$ | 269.91 J/(mol K) |
  | Enthalpy of combustion, $Δ_cH^o$ | −2220.0 kJ/mol |
  | Heat capacity, $c_p$ | 73.60 J/(mol K) |
  | van der Waals' constants | a = 877.88 $L^2$ $kPa/mol^2$ 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 Hg | P in mm Hg | 1 | 10 | 40 | 100 | 400 | 760 | 1520 | 3800 | 7600 | 15200 | 30400 | 45600 |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | T in °C | 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.
  
  ## Spectral data
  
  UV-Vis :
  
  | $λ_{max}$ | ? 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)
  
  * MSDS from Suburban Propane, L.P dated 5/2013 in the SDSdata.org database
  * view
  * Except where noted otherwise, data relate to Standard temperature and pressure.
  * Reliability of data general note.
  