Copyright © Philip M. Parker, INSEAD. Terms of Use.
Definition: Acetaldehyde |
AcetaldehydeNoun1. A colorless volatile water-soluble liquid aldehyde used chiefly in manufacture of acetic acid and perfumes and drugs. Source: WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. |
| Domain | Definitions |
Food & Agriculture | The principal aldehyde of wine; is formed by the oxydation of ethyl alcohol or by the decarboxydation of pyrnvic acid. Source: European Union. (references) |
Health | A colorless, flammable liquid used in the manufacture of acetic acid, perfumes, and flavors. It is also an intermediate in the metabolism of alcohol. It has a general narcotic action and also causes irritation of mucous membranes. Large doses may cause death from respiratory paralysis. (references) |
Source: compiled by the editor from various references; see credits. | |
(From Wikipedia, the free Encyclopedia)
Acetaldehyde, also known as ethanal, is a chemical compound, an aldehyde with formula CH3CHO and structure
It occurs naturally in ripe fruit and coffee, and is produced by plants as part of their normal metabolism.
In the liver, the enzyme alcohol dehydrogenase converts ethanol into acetaldehyde, which is then further converted into the harmless acetic acid by acetaldehyde dehydrogenase. Acetaldehyde is more toxic than alcohol and is responsible for many hangover symptoms. Some persons from far-Eastern descent have a mutation in their acetaldehyde dehydrogenase gene, making this enzyme less effective. In these people, acetaldehyde accumulates after drinking, leading to severe and immediate hangover symptoms. These people are therefore less likely to become alcoholics. The drug antabuse (disulfiram) also prevents the oxidation of acetaldehyde to acetic acid, with the same unpleasant effects for drinkers. It is used in the treatment of certain alcoholics.
The last steps of alcoholic fermentation in bacteria, plants and yeast involves the conversion of pyruvate into acetaldehyde by the enzyme pyruvate decarboxylase, followed by the conversion of acetaldehyde into ethanol. The latter reaction is again catalyzed by alcohol dehydrogenase, now operating in the opposite direction.
In the chemical industry, acetaldehyde is mainly used as an intermediary to produce acetic acid, certain esters, and a number of other chemicals. In 1989, US production stood at 740 million pounds.
When exposed to acetaldehyde vapors, humans develop irritation of the eyes, skin and the respiratory tract. Acetaldehyde is an air pollutant, emitted by cars and certain production facilities. It is also contained in tobacco smoke. It is classified as a probable carcinogen.
Three molecules of acetaldehyde can form the cyclic paraldehyde, and four can form the cyclic acetaldehyde tetramer.
The CAS registry number of acetaldehyde is 75-07-0 and its UN number is UN 1089.
External links
Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Acetaldehyde."
Synonym: AcetaldehydeSynonym: ethanal (n). (additional references) |
Crosswords: Acetaldehyde |
| English words defined with "acetaldehyde": aldehyde-alcohol, aldol ♦ ethanal trimer ♦ paraldehyde. (references) |
| Specialty definitions using "acetaldehyde": Alcohol Dehydrogenase ♦ Ethanolamine Ammonia-Lyase ♦ Glycine Hydroxymethyltransferase ♦ osso malare ♦ Pyruvate Decarboxylase. (references) |
| Domain | Title |
Books | |
Source: compiled by the editor from various references; see credits. | |
| "Acetaldehyde" is generally used as a noun (singular) -- approximately 100.00% of the time. "Acetaldehyde" is used about 46 times out of a sample of 100 million words spoken or written in English. Its rank is based on over 700,000 words used in the English language. Some parts-of-speech are not covered due to the samples used by the British National Corpus. (note: percents less than one-hundredth of one percent have been omitted) |
| Parts of Speech | Percent | Usage per 100 Million Words | Rank in English |
| Noun (singular) | 100% | 46 | 50,285 |
Source: compiled by the editor from several corpora; see credits.
| The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com. |
| Expression | Frequency per Day |
acetaldehyde | 27 |
acetaldehyde balance ethylene from | 2 |
acetaldehyde ethylene from | 2 |
| Source: compiled by the editor from various references; see credits. | |
| Language | Translations for "acetaldehyde"; alternative meanings/domain in parentheses. | ||||||||||||||||||||||||||||
Chinese | 乙醛. (various references) | ||||||||||||||||||||||||||||
Danish | acetaldehyd (acetic aldehyde). (various references) | ||||||||||||||||||||||||||||
Dutch | acetaldehyde (acetic aldehyde). (various references) | ||||||||||||||||||||||||||||
Finnish | asetaldehydi (acetic aldehyde). (various references) | ||||||||||||||||||||||||||||
French | aldéhyde ordinaire (acetic aldehyde), aldéhyde acétique (acetic aldehyde), aldéhyde éthylique (acetic aldehyde), acétaldéhyde (acetic aldehyde), léthanal. (acetic aldehyde). (various references) | ||||||||||||||||||||||||||||
German | Acetaldehyd (acetic aldehyde). (various references) | ||||||||||||||||||||||||||||
Greek | ακεταλδεΰδη (acetic aldehyde), ακεταλδεϋδη (acetic aldehyde), οξική αλδείνη. (various references) | ||||||||||||||||||||||||||||
Italian | aldeide acetica (acetic aldehyde), acetaldeide (acetic aldehyde). (various references) | ||||||||||||||||||||||||||||
Pig Latin | acetaldehydeay aldeído ordinário (acetic aldehyde), aldeído acético (acetic aldehyde), acetaldeído (acetic aldehyde), etanal (acetic aldehyde). (various references) acetaldehid. (various references) aldehído acético (acetic aldehyde), acetaldehido, acetaldehído (acetic aldehyde), etanol (acetic aldehyde, ethanol, ethyl alcohol, ethylalcohol, ordinary alcohol). (various references) acetylaldehyd (acetic aldehyde), acetaldehyd (acetic aldehyde), vanlig aldehyd (acetic aldehyde), etyldehyd (acetic aldehyde), etanal (acetic aldehyde). (various references) | ||||||||||||||||||||||||||||
Derivations | |
Words beginning with "acetaldehyde": acetaldehydes. (additional references) | |
| |
"Acetaldehyde" is suggested in spellcheckers for the following: acetaldehye, acetaldhyde. (additional references) | |
| Source: compiled by the editor, based on several corpora (additional references). | |
| Words rhyming with "acetaldehyde" (pronounced 'Ac`et*al"de*hyde'): Aldehyde, formaldehyde, Metaldehyde, Oxaldehyde, Paraldehyde. (additional references) |
Scrabble® Enable2K-Verified Anagrams | |
| Words within the letters "a-a-c-d-d-e-e-e-h-l-t-y" | |
-2 letters: detachedly. | |
-4 letters: acylated, aldehyde, chelated, dealated, detached, heatedly, leachate. | |
-5 letters: acylate, alcayde, cathead, chaetae, chaetal, cheated, chelate, cleated, datedly, deadeye, dealate, deathly, decadal, decayed, delated, delayed, deleted, elected, latched, leached, leeched, letched, yachted. | |
| Words containing the letters "a-a-c-d-d-e-e-e-h-l-t-y" | |
+1 letter: acetaldehydes. | |
| Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. | |
Hexadecimal (or equivalents, 770AD-1900s) (references)41 63 65 74 61 6C 64 65 68 79 64 65 |
| Leonardo da Vinci (1452-1519; backwards) (references)
|
| American Sign Language (origins from 1620-1817 in Italy and, especially, France) (references)
|
| Semaphore (1791, in France) (references)
|
| Braille (1829, in France) (references)
|
Morse Code (1836) (references).- -.-. . - .- .-.. -.. . .... -.--. -.. . |
| Dancing Men (Sir Arthur Conan Doyle, 1903) (references)
|
Binary Code (1918-1938, probably earlier) (references)01000001 01100011 01100101 01110100 01100001 01101100 01100100 01100101 01101000 01111001 01100100 01100101 |
HTML Code (1990) (references)A c e t a l d e h y d e |
ISO 10646 (1991-1993) (references)0041 0063 0065 0074 0061 006C 0064 0065 0068 0079 0064 0065 |
| British Sign Language (Fingerspelling, BSL; 1992, British Deaf Association Dictionary of British Sign Language) (references)
|
Encryption (beginner's substitution cypher): (references)356971866778707174917071 |
| 1. Definition 2. Synonyms 3. Crosswords 4. Usage: Commercial | 5. Usage Frequency 6. Expressions: Internet 7. Translations: Modern 8. Derivations | 9. Rhymes 10. Anagrams 11. Orthography 12. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
