Ethylene

CAS RN:74-85-1

Other Properties

Monoclinic prisms when it solidifies at -181 deg C
BP: -102.4 deg C at 700 mm Hg
1 mg/cu m = 0.86 ppm; 1 ppm = 1.17 mg/cu m
Burns with a luminous flame
Density: 50.5678 g/cu cm at -104 deg C
Specific gravity: 0.57 at -130.8 deg C
Latent heat of fusion 3.33 kj/mole (-169.4 deg C). Latent heat of vaporization 13.6 kj/mole (-103.8 deg C). Heat of formation 52.47 kj/mole (25 deg C). Ionization potential 10.51 eV. Heat capacity, constant pressure: 1.516 J/g deg C; Heat capacity, constant volume: 1.220 J/g deg C. Coefficient of thermal expansion 3.7x10-3 at 20 deg C. Heat of combustion 1,411 Kj/mole
Polymerizes at high pressures
Vapor pressure 4,040 kPa (-1.5 deg C)
Hydroxyl radical reaction rate constant = 7.90X10-12 cu cm/molec-sec at 25 deg C
Find more information on this substance at: Hazardous Substances Data Bank , TOXNET , PubMed