Ethane

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Ethane
Ethane-staggered-CRC-MW-dimensions-2D.png
Ethane-A-3D-balls.png
Ethane-3D-vdW.png
IUPAC name Ethane[1]
Identifiers
CAS number 74-84-0
PubChem 6324
EC number 200-814-8
MeSH Ethane
ChEBI CHEBI:42266
RTECS number KH3800000
SMILES CC
Beilstein Reference 1730716
Properties
Molecular formula C2H6
Molar mass 30.07 g mol-1
Appearance Colorless gas
Odor Odorless
Density
  • 1.3562 mg cm−3 (at 0 °C)[1]
  • 0.5446 g cm−3
    (at 184 K)
Melting point

-183 °C, 90.4 K, -297 °F

Boiling point

-89 °C, 184.6 K, -127 °F

Solubility in water 56.8 mg L−1[2]
Vapor pressure 3.8453 MPa (at 21.1 °C)
kH 19 nmol Pa−1 kg−1
Acidity (pKa) 50
Basicity (pKb) -36
Thermochemistry
Std enthalpy of
formation
ΔfHo298
−84 kJ mol−1
Std enthalpy of
combustion
ΔcHo298
−1561.0–−1560.4 kJ mol−1
Specific heat capacity, C 52.49 J K−1 mol−1
Hazards
MSDS inchem.org
EU classification Flammable F+
EU Index 601-002-00-X
NFPA 704

NFPA 704.svg

4
1
0
 
Flash point −135 °C
Autoignition
temperature
472 °C
Explosive limits 2.9–13%
Related compounds
Related alkanes
Related compounds
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Its main use is in the chemical industry, in producing ethylene by steam cracking. At room temperature, the gas is flammable, and it explodes when mixed with air. When ethane is at a liquid state, touching it will result with a very serious frostbite.

References[change | change source]

  1. 1.0 1.1 "Ethane – Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 16 September 2004. http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=6324&loc=ec_rcs. Retrieved 7 December 2011.
  2. Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. p. 8.88. ISBN 0-8493-0486-5.