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aldehyde    
n. 乙醛

乙醛

aldehyde
n 1: any of a class of highly reactive chemical compounds; used
in making resins and dyes and organic acids

Aldehyde \Al"de*hyde\ ([a^]l"d[-e]*h[imac]d), n. [Abbrev. fr.
alcohol dehydrogenatum, alcohol deprived of its hydrogen.]
1. (Chem.) A colorless, mobile, and very volatile liquid
obtained from alcohol by certain processes of oxidation.
[1913 Webster]

2. (Chem.) Any compound having the group {-CHO}. Methyl
aldehyde, the simplest aldehyde, is more commonly called
formaldehyde, {H-CHO}, and acetic aldehyde is now more
commonly called {acetaldehyde}. The higher aldehydes may
be solids. A {reducing sugar} typically contains the
aldehyde group.
[PJC]

Note: The aldehydes are intermediate between the alcohols and
acids, and differ from the alcohols in having two less
hydrogen atoms in the molecule, as common aldehyde
(called also {acetaldehyde}, {acetic aldehyde} or
{ethyl aldehyde}), {C2H4O}; methyl aldehyde (called
also {formaldehyde}), {CH2O}.
[1913 Webster PJC]

{Aldehyde ammonia} (Chem.), a compound formed by the union of
aldehyde with ammonia.
[1913 Webster]


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  • Aldehyde - Wikipedia
    Aldehyde molecules have a central carbon atom that is connected by a double bond to oxygen, a single bond to hydrogen and another single bond to a third substituent, which is carbon or, in the case of formaldehyde, hydrogen
  • Aldehyde | Definition, Structure, Examples, Facts | Britannica
    Aldehyde, any of a class of organic compounds in which a carbon atom shares a double bond with an oxygen atom, a single bond with a hydrogen atom, and a single bond with another atom or group of atoms (designated R in general chemical formulas and structure diagrams)
  • Aldehyde Functional Group: Definition, Structure, Examples
    What is an aldehyde Learn its general formula, structure, nomenclature, properties, and chemical reactions Check out a few examples, along with their uses
  • ALDEHYDE Definition Meaning - Merriam-Webster
    The meaning of ALDEHYDE is acetaldehyde; broadly : any of a class of highly reactive organic compounds that are analogous to acetaldehyde and characterized by a carbonyl group attached to a hydrogen atom
  • What Is an Aldehyde? Definition, Uses, and Examples
    An aldehyde is any organic molecule that contains a carbon atom double-bonded to an oxygen atom and single-bonded to a hydrogen atom, with that grouping sitting at the very end of the molecule’s carbon chain
  • Aldéhyde — Wikipédia
    From page 290 : "Je le décrirai dans ce mémoire sous le nom d'aldehyde; ce nom est formé de alcool dehydrogenatus " Maurice P Crosland, Historical Studies in the Language of Chemistry, Courier Dover Publications, 2004 (ISBN 978-0-486-43802-3, lire en ligne [archive])
  • Properties of Aldehydes and Ketones - Chemistry LibreTexts
    An aldehyde differs from a ketone by having a hydrogen atom attached to the carbonyl group This makes the aldehydes very easy to oxidise For example, ethanal, CH 3 CHO, is very easily oxidised to either ethanoic acid, CH 3 COOH, or ethanoate ions, CH 3 COO - Ketones don't have that hydrogen atom and are resistant to oxidation
  • Nomenclature of Aldehydes Ketones - Chemistry LibreTexts
    For aldehydes common parent chain names, similar to those used for carboxylic acids, are used and the suffix –aldehyde is added to the end In common names of aldehydes, carbon atoms near the carbonyl group are often designated by Greek letters
  • Aldehyde – Wikipedia
    Aldehyde Aldehyde (aus neulateinisch alcoholus dehydrogenatus, „ dehydrierter Alkohol “ oder „Alkohol, dem Wasserstoff entzogen wurde“) sind chemische Verbindungen mit der funktionellen Gruppe –CHO, die Aldehydgruppe oder auch Formylgruppe genannt wird
  • Aldehyde - Simple English Wikipedia, the free encyclopedia
    The group without the side chain is called the aldehyde group or formyl group Aldehydes are different from ketones because the formyl group is at the end of the molecule in an aldehyde





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