Ethane
A simple hydrocarbon gas, key feedstock for ethylene production.
Ethane is a naturally occurring organic chemical compound with the chemical formula C2H6. At standard temperature and pressure, it is a colorless, odorless gas. Its chief use is as feedstock for ethylene production, and it is isolated on an industrial scale from natural gas and as a petrochemical by-product of petroleum refining.
- chemical_formula
- C2H6
- molar_mass
- 30.07 g/mol
- solubility_in_water
- very sparingly soluble
Lore & Background
He mistook the hydrocarbon product for methane and did not investigate it further. Ethane occurs as a trace gas in Earth's atmosphere, with a concentration at sea level of 0.5 ppb. It has been detected in the atmospheres of all four giant planets and in the atmosphere of Saturn's moon Titan. On Titan, ethane produced photochemically from methane is believed to have accumulated into hydrocarbon seas covering much of the moon's polar regions.
Reader's Guide
Ethane is significant as the second-largest component of natural gas after methane and as the primary feedstock for ethylene production via steam cracking. Its simple structure provides a classic example of rotational barriers in organic chemistry, known as the 'ethane barrier,' which has been studied extensively. Ethane's role in atmospheric chemistry, particularly as a precursor to methane and as a trace component in extraterrestrial environments, offers insights into planetary and cometary processes. The compound's industrial importance grew after the 1960s when separation from natural gas became common, enabling efficient ethylene production. Ethane's presence on Titan and Pluto suggests it may be a primordial component of the solar nebula. Despite being a greenhouse gas, its short atmospheric lifetime and lower abundance compared to methane limit its direct warming impact.
Did You Know?
- The rotational barrier of ethane is a classic example in organic chemistry, with its physical origin still not completely settled.
- Ethane has been detected in the atmospheres of all four giant planets and on Saturn's moon Titan, where it forms hydrocarbon lakes.
Frequently Asked Questions
Who is Ethane?
Ethane is a naturally occurring organic compound with the formula C2H6, found as a colorless, odorless gas under standard temperature and pressure. It is the second member of the alkane family, sitting directly after methane in the homologous series.
What is Ethane's main role in the industrial world?
Its chief purpose is serving as feedstock for ethylene production, one of the most vital building blocks in petrochemical manufacturing. It is also recovered as a by-product during petroleum refining.
Where does Ethane come from?
It is isolated on an industrial scale from natural gas deposits and also appears as a petrochemical by-product of petroleum refining. In both cases it is extracted as part of a broader hydrocarbon mixture rather than synthesized from scratch.
Why is Ethane important to the chemistry community?
Ethane is a critical upstream link in the supply chain because it is the principal precursor for making ethylene, which feeds into plastics, solvents, and countless downstream materials. Losing it would remove a major raw material from the petrochemical industry.
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