Ethyl group

For other uses of "ethyl", see Ethyl (disambiguation).

Ethyl group (highlighted blue) as part of a molecule, as the ethyl radical, and in the compounds ethanol, bromoethane, ethyl acetate, and ethyl methyl ether.

In chemistry, an ethyl group is an alkyl substituent derived from ethane (C₂H₆). It has the formula –C₂H₅ and is very often abbreviated Et. Ethyl is used in the IUPAC nomenclature of organic chemistry for a saturated two-carbon moiety in a molecule, whilst the prefix "eth-" is used to indicate the presence of two carbon atoms in the molecule.

Ethylation

Ethylation is the formation of a compound by introduction of the ethyl group. The most widely practiced example of this reaction is the ethylation of benzene. The ethylating agent is ethylene.

Approximately 24.7 million tons were produced in 1999. Ethylbenzene is the precursor to styrene, the precursor to polystyrene.

Etymology

The name of the group is derived from the Aether, the first-born Greek elemental god of air, and "hyle", referring to "stuff".

See also

• Functional group