Ethylene (data page)

This page provides supplementary chemical data on ethylene.

Structure and properties

Structure and properties
Index of refraction ?
Dielectric constant ? ε0 at ? °C
Bond strength ?
Bond length C-C 133pm C-H 108 pm
Bond angle 121.7
Magnetic susceptibility ?

Thermodynamic properties

Phase behavior
Triple point 104 K (−169 °C), 120 Pa
Critical point 282.5 K (9.4 °C), 50.6 bar
Std enthalpy change
of fusion, ΔfusHo 		+3.35 kJ/mol
Std entropy change
of fusion, ΔfusSo 		+32.2 J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo 		+13.5 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 		? kJ/mol
Standard molar entropy,
Soliquid 		117.8 J/(mol K)
Heat capacity, cp 67.4 J/(mol K)
Gas properties
Std enthalpy change
of formation, ΔfHogas 		+52.47 kJ/mol
Standard molar entropy,
Sogas 		219.32 J/(mol K)
Enthalpy of combustion, ΔcHo –1387.4 kJ/mol
Heat capacity, cp 42.9 J/(mol K)
van der Waals' constants[1] a = 453.02 L2 kPa/mol2
b = 0.05714 liter per mole

Vapor pressure of liquid

P in mmHg 1 10 40 100 400 760 1520 3800 7600 15200 30400
T in °C –168.3 –153.2 –141.3 –131.8 –113.9 –103.7 –90.8 –71.1 –52.8 –29.1 –1.5  —


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

log10 of ethylene vapor pressure. Uses formula: , obtained from Lange's Handbook of Chemistry, 10th ed.

Spectral data

UV-Vis
λmax ? nm
Extinction coefficient, ε ?
IR
Major absorption bands 974 cm−1
NMR
Proton NMR  
Carbon-13 NMR  
Other NMR data  
MS
Masses of
main fragments 		 

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.


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References

  1. ^ Lange's Handbook of Chemistry 10th ed, pp 1522-1524

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