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aldehyde
aldehyde [ al cohol + New Lat. dehydrogenatus =dehydrogenated], any of a class of organic compounds that contain the carbonyl group , and in which the carbonyl group is bonded to at least one hydrogen; the general formula for an aldehyde is RCHO, where R is hydrogen or an alkyl or aryl group. Aldehydes are formed by partial oxidation of primary alcohols and form carboxylic acids when they are further oxidized. The common name for an aldehyde is often derived from the name of the acid it forms; the IUPAC name is usually derived from the name of the alcohol from which it is formed. Low molecular weight aldehydes, e.g., formaldehyde and acetaldehyde , have sharp, unpleasant odors; higher molecular weight aldehydes, e.g., benzaldehyde and furfural , have pleasant, often flowery, odors and are found in the essential oils of certain plants. Aldehydes are used for the manufacture of synthetic resins, e.g., bakelite, and for making dyestuffs, flavorings, perfumes, and other chemicals. Some are used as preservatives and disinfectants. |
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"aldehyde." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "aldehyde." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1E1-aldehyde.html "aldehyde." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-aldehyde.html |
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aldehyde
aldehyde (chem.) fluid obtained by oxidization of alcohol; compound of this type. XIX. f. al. dehyd., abbr. of alcohol dehydrogenatum dehydrogenated alcohol.
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Cite this article
T. F. HOAD. "aldehyde." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "aldehyde." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O27-aldehyde.html T. F. HOAD. "aldehyde." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-aldehyde.html |
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aldehyde
aldehyde An organic compound that contains the group—CHO.
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Cite this article
MICHAEL ALLABY. "aldehyde." A Dictionary of Zoology. 1999. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "aldehyde." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O8-aldehyde.html MICHAEL ALLABY. "aldehyde." A Dictionary of Zoology. 1999. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-aldehyde.html |
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aldehyde
aldehyde An organic compound that contains group -CHO.
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Cite this article
MICHAEL ALLABY. "aldehyde." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "aldehyde." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O7-aldehyde.html MICHAEL ALLABY. "aldehyde." A Dictionary of Plant Sciences. 1998. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-aldehyde.html |
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