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 changeof fusion, ΔfusHo +3.35 kJ/mol Std entropy changeof fusion, ΔfusSo +32.2 J/(mol·K) Std enthalpy changeof vaporization, ΔvapHo +13.5 kJ/mol Std entropy changeof vaporization, ΔvapSo ? J/(mol·K) Solid properties Std enthalpy changeof formation, ΔfHosolid ? kJ/mol Standard molar entropy,Sosolid ? J/(mol K) Heat capacity, cp ? J/(mol K) Liquid properties Std enthalpy changeof 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 changeof 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' constantsLange's Handbook of Chemistry 10th ed, pp 1522-1524 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.
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.
References
NIST Standard Reference Database