Ethylene (data page)

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This page provides supplementary chemical data on ethylene.

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 mmHg110401004007601520380076001520030400
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

Material Safety Data Sheet

References

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