Ethane (data page)
This page provides supplementary chemical data on ethane.
Contents
- 1 Material Safety Data Sheet
- 2 Structure and properties
- 3 Thermodynamic properties
- 4 Vapor pressure of liquid
- 5 Spectral data
- 6 References
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Material Safety Data Sheet
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as SIRI, and follow its directions.
Structure and properties
Structure and properties
Index of refraction, nD
?
Abbe number
?
Dielectric constant, εr
? ε0 at ? °C
Bond strength
?
Bond length
?
Bond angle
?
Magnetic susceptibility
?
Surface tension
21.16 dyn/cm at –119.9°C
Thermodynamic properties
Phase behavior
Triple point
91 K (–182 °C), 1.1 Pa
Critical point
305.3 K (32.2 °C), 4.9 MPa
Std enthalpy change
of fusion, ΔfusHo
9.76 kJ/mol at –182°C
Std entropy change
of fusion, ΔfusSo
6.46 J/(mol·K) at –182°C
Std enthalpy change
of vaporization, ΔvapHo
crystal I → liquid
14.703 kJ/mol at –89.0°C
Std entropy change
of vaporization, ΔvapSo
crystal I → liquid
79.87 J/(mol·K) at –89.0°C
Std enthalpy change
of state transition, ΔtrsHo
crystal II → crystal I
2.282 kJ/mol at –183.3°C
Std entropy change
of state transition, ΔtrsSo
crystal II → crystal I
25.48 kJ/mol at –183.3°C
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
? kJ/mol
Standard molar entropy,
Soliquid
126.7 J/(mol K)
Heat capacity, cp
68.5 J/(mol K) at –179°C
Gas properties
Std enthalpy change
of formation, ΔfHogas
–83.8 kJ/mol
Standard molar entropy,
Sogas
173.8 J/(mol K)
Enthalpy of combustion, ΔcHo
–1560.7 kJ/mol
Heat capacity, cp
52.49 J/(mol K) at 25°C
van der Waals’ constants
a = 556.2 L2 kPa/mol2
b = 0.6380 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
–159.5
–142.9
–129.8
–119.3
–99.6
–88.6
–75.0
–52.8
–32.0
–6.4
23.6
—
Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.
log10 of Ethane vapor pressure. Uses formula obtained from CHERIC
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
References
- ^ Lange’s Handbook of Chemistry 10th ed, pp 1522-1524
- ^ “Pure Component Properties” (Queriable database). Chemical Engineering Research Information Center. Retrieved on 8 May 2007.
Except where noted otherwise, data relate to standard ambient temperature and pressure.
Disclaimer applies.
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Categories: Chemical data pages | Alkanes