This page provides supplementary chemical data on ethylene.
Structure and properties
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Thermodynamic properties
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Phase behavior
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Triple point
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104 K (−169 °C), 120 Pa
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Critical point
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282.5 K (9.4 °C), 50.6 bar
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Std enthalpy change of fusion, ΔfusHo
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+3.35 kJ/mol
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Std entropy change of fusion, ΔfusSo
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+32.2 J/(mol·K)
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Std enthalpy change of vaporization, ΔvapHo
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+13.5 kJ/mol
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Std entropy change of vaporization, ΔvapSo
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? J/(mol·K)
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Solid properties
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Std enthalpy change of formation, ΔfHosolid
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? kJ/mol
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Standard molar entropy, Sosolid
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? J/(mol K)
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Heat capacity, cp
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? J/(mol K)
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Liquid properties
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Std enthalpy change of formation, ΔfHoliquid
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? kJ/mol
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Standard molar entropy, Soliquid
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117.8 J/(mol K)
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Heat capacity, cp
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67.4 J/(mol K)
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Gas properties
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Std enthalpy change of formation, ΔfHogas
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+52.47 kJ/mol
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Standard molar entropy, Sogas
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219.32 J/(mol K)
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Enthalpy of combustion, ΔcHo
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–1387.4 kJ/mol
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Heat capacity, cp
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42.9 J/(mol K)
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van der Waals' constants[1]
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a = 453.02 L2 kPa/mol2 b = 0.05714 liter per mole
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Vapor pressure of liquid
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P in mmHg |
1 |
10 |
40 |
100 |
400 |
760 |
1520 |
3800 |
7600 |
15200 |
30400 |
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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 |
—
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Table data obtained from CRC Handbook of Chemistry and Physics, 44th ed.
Material Safety Data Sheet
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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.
- ^ Lange's Handbook of Chemistry 10th ed, pp 1522-1524