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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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英文字典中文字典相關資料:
  • 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)
  • 18. 7: Aldehydes and Ketones - Chemistry LibreTexts
    The difference between aldehydes and ketones is the placement of the carbonyl group within the molecule An aldehyde is an organic compound in which the carbonyl group is attached to a carbon atom at the end of a carbon chain
  • What are Aldehydes? - BYJUS
    The structures of naturally occurring aldehyde and ketone are given below General Properties of Aldehydes 1 Physical State Except formaldehyde which is gas at room temperature, most of the common aldehydes and ketones are liquid at ordinary temperature
  • Aldehyde Definition, Functional Group Properties - Chemistry Dictionary
    An aldehyde (RCHO) is a carbonyl compound where carbonyl group is bonded to one carbon (or alkyl group) and one hydrogen atom The aldehydes are named from the name of corresponding longest carbon chain of aliphatic hydrocarbon containing the aldehyde group by replacing the ending -e with -al
  • Aldehyde- General Structure, Classification, Properties and Faqs.
    Aldehydes contain the aldehyde group (-CHO), also known as the formyl group It is a monovalent group, meaning that the carbonyl carbon is attached to only one other group (either a hydrogen atom or a hydrocarbon group) The carbon atom in the aldehyde group is primary (1°) in nature because it is bonded to one alkyl group and one hydrogen atom
  • an introduction to aldehydes and ketones - chemguide
    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 -
  • Aldehyde
    Aldehyde Aldehydes are organic compounds that contain a carbonyl group (a carbon double-bonded to an oxygen) at the end of a carbon chain They are characterized by the general formula RCHO, where R represents an alkyl or aryl group





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