Ethyl Bromide

ethyl bromide

[′eth·əl ′brō‚mīd]
(organic chemistry)
C2H5Br A colorless liquid, boiling at 39°C; used as a refrigerant and in organic synthesis.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Ethyl Bromide


(also bromoethane), C2H5Br, a colorless liquid with a weak ethereal odor. Ethyl bromide has a melting point of – 119°C, a boiling point of 38.3°C, and a density of 1.459 g/cm3 at 20°C. It is poorly soluble in water.

Ethyl bromide is produced from ethyl alcohol according to the reaction

C2H5OH + KBr + H2SO4 → C2H5Br + KHSO4 + H2O

It is used in organic synthesis for the introduction of the ethyl group, C2H5—. It is also used as a component of antiknock fluids in gasoline (see).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
A subsequent reaction of the pyridine group with ethyl bromide has been used to generate positively charged polymer block (PE4VP) with different quaternization degrees.
The 4-vinylpyridine units of the PS-b-P4VP copolymer were reacted with ethyl bromide to obtain cationic PS-b-PE4VP block copolymers with different percentages of quaternization.
To increase the amphiphilic character of PS-b-P4VP copolymers, a formal charge has been introduced into the P4VP block by reaction of pyridine ring with ethyl bromide. The fraction of pyridine ring converted to ethyl-4vinylpyridinium bromide was determined by FTIR using characteristic absorption bands of pyridine ring at 1600 at [cm.sup.-1] and quaternized pyridine at 1640 [cm.sup.-1] (Figure 2) [11].
Cold sterilization replaces the now internationally banned Ethyl Bromide fumigation, as well as Methyl Bromide, which is prohibited in most countries.
Tetraammonium ethyl bromide was used as catalyst which is highly water soluble compound.
At American instigation, the 2001 cut-off date for production and use of ethyl bromide was shifted back to 2010.