acetaldehyde

[as-i-tal-duh-hahyd]
noun Chemistry.
a volatile, colorless, water-soluble liquid, C 2 H 4 O, having a pungent, fruitlike odor: used chiefly in the silvering of mirrors and in organic synthesis.
Also called ethanal.


Origin:
1875–80; acet- + aldehyde

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To acetaldehyde
Collins
World English Dictionary
acetaldehyde (ˌæsɪˈtældɪˌhaɪd)
 
n
Systematic name: ethanal a colourless volatile pungent liquid, miscible with water, used in the manufacture of organic compounds and as a solvent and reducing agent. Formula: CH3CHO

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary

acetaldehyde ac·et·al·de·hyde (ās'ĭ-tāl'də-hīd')
n.
A colorless, flammable liquid formed during ethanol metabolism and yeast fermentation of organic compounds and used to manufacture acetic acid and drugs. Also called aldehyde, ethaldehyde.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
acetaldehyde   (ās'ĭ-tāl'də-hīd')  Pronunciation Key 
A colorless, flammable liquid, used to manufacture acetic acid, perfumes, and drugs. Chemical formula: C2H4O.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Encyclopedia Britannica
Encyclopedia

acetaldehyde

an aldehyde used as a starting material in the synthesis of 1-butanol (n-butyl alcohol), ethyl acetate, perfumes, flavourings, aniline dyes, plastics, synthetic rubber, and other chemical compounds. It has been manufactured by the hydration of acetylene and by the oxidation of ethanol (ethyl alcohol). Today the dominant process for the manufacture of acetaldehyde is the Wacker process, developed between 1957 and 1959, which catalyzes the oxidation of ethylene to acetaldehyde. The catalyst is a two-component system consisting of palladium chloride, PdCl2, and copper chloride, CuCl2.

Learn more about acetaldehyde with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Example sentences
Ethanol also increase formaldehyde and acetaldehyde emissions.
Also not mentioned is the formation of formaldehyde and acetaldehyde.
Acetaldehyde is mainly used as an intermediate in the synthesis of other chemicals.
An example is acetaldehyde produced in the combustion of ethanol.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature