The Online Encyclopedia and Dictionary









Name Ethane

Structure of Ethane

Chemical formula CH3CH3 or C2H6
Formula weight 30.07 amu
Synonyms Dimethyl, Ethyl hydride, Methylmethane
CAS number 74-84-0
UN number 1035

Phase behavior

Melting point 90.34 K (-182.76°C)
Boiling point 184.5 K (-88.6°C)
Triple point 91 K (-182°C)
0.000011 bar
Critical point 305 K (32°C)
49 bar
ΔfusH 0.583 kJ/mol
ΔfusS 6.46 J/mol·K
ΔvapH 10 kJ/mol
Solubility 4.7 ml/100 ml water

Liquid properties

ΔfH0liquid ? kJ/mol
S0liquid 126.7 J/mol·K
Cp 68 J/mol·K
Density 0.548 ×103 kg/m3

Gas properties

ΔfH0gas -83.8 kJ/mol
S0gas ? J/mol·K
Cp 52.49 J/mol·K
Ingestion Nausea, vomiting, internal hemorrhage.
Inhalation Rapid breathing & heart rate. Headaches, mood disturbance, conufsion and seisures may occur. Danger of cardiac arrest in severe cases.
Skin (Frostbite on exposure to cryogenic liquid)
Flash point -135°C
Autoignition temperature 515°C
Explosive limits 3-12.5%

More info

Properties NIST WebBook
MSDS Hazardous Chemical Database

SI units were used where possible. Unless otherwise stated, standard conditions were used.

Disclaimer and references

Ethane is a chemical compound with chemical formula C2H6. It is an alkane, that is, an aliphatic hydrocarbon. At ordinary pressure and temperature ethane is a colourless, odourless gas.

It is the simplest saturated hydrocarbon containing more than one carbon atom. Ethane is a prominent compound of industrial importance, by converting it to ethylene by cracking.

In an industrial scale, ethane is produced from natural gas and from petroleum refining. Chemical synthesis can be achieved by Kolbe electrolysis.

Last updated: 10-29-2005 02:13:46