Chemical data page
This page provides supplementary chemical data on ethylene .
Structure and properties
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 , Δfus H o
+3.35 kJ/mol
Std entropy change of fusion , Δfus S o
+32.2 J/(mol·K)
Std enthalpy change of vaporization , Δvap H o
+13.5 kJ/mol
Std entropy change of vaporization , Δvap S o
? J/(mol·K)
Solid properties
Std enthalpy change of formation , Δf H o solid
? kJ/mol
Standard molar entropy ,S o solid
? J/(mol K)
Heat capacity , cp
? J/(mol K)
Liquid properties
Std enthalpy change of formation , Δf H o liquid
? kJ/mol
Standard molar entropy ,S o liquid
117.8 J/(mol K)
Heat capacity , cp
67.4 J/(mol K)
Gas properties
Std enthalpy change of formation , Δf H o gas
+52.47 kJ/mol
Standard molar entropy ,S o gas
219.32 J/(mol K)
Enthalpy of combustion , Δc H o
–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:
log
10
-->
P
m
m
H
g
=
6.74756
− − -->
585.00
255.00
+
T
{\displaystyle \scriptstyle \log _{10}P_{mmHg}=6.74756-{\frac {585.00}{255.00+T}}}
, obtained from Lange's Handbook of Chemistry , 10th ed.
Spectral data
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
^ Lange's Handbook of Chemistry 10th ed, pp 1522-1524