| slovo | definícia |
formaldehyd
(czen) | formaldehyd,formaldehyden: luke |
formaldehyd
(czen) | formaldehyd,methanaln: Zdeněk Brož |
| | podobné slovo | definícia |
formaldehyde
(encz) | formaldehyde,formaldehyd n: luke |
polyvinyl-formaldehyde
(encz) | polyvinyl-formaldehyde, n: |
urea-formaldehyde resin
(encz) | urea-formaldehyde resin, n: |
Formaldehyde
(gcide) | Formaldehyde \For*mal"de*hyde\, n. [Formic + aldehyde.] (Chem.)
A colorless, volatile liquid, H2CO, resembling acetic or
ethyl aldehyde, and chemically intermediate between methyl
alcohol and formic acid.
[1913 Webster]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] |
formaldehyde
(gcide) | Formaldehyde \For*mal"de*hyde\, n. [Formic + aldehyde.] (Chem.)
A colorless, volatile liquid, H2CO, resembling acetic or
ethyl aldehyde, and chemically intermediate between methyl
alcohol and formic acid.
[1913 Webster]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] |
paraformaldehyde
(gcide) | paraformaldehyde \par`a*form*al"de*hyde\, n. [Pref. para- +
formaldehyde.] (Chem.)
A polymer of formaldehyde obtained as a white crystalline
substance by concentration of a formaldehyde solution.
Formula (CH20)n. It dissolves in hot water with the release
of formaldehyde, and is used as a disinfectant.
[1913 Webster +PJC] |
formaldehyde
(wn) | formaldehyde
n 1: a colorless poisonous gas; made by the oxidation of
methanol [syn: formaldehyde, methanal] |
polyvinyl-formaldehyde
(wn) | polyvinyl-formaldehyde
n 1: a polymer of vinyl formaldehyde |
urea-formaldehyde resin
(wn) | urea-formaldehyde resin
n 1: a clear thermosetting resin made from urea and formaldehyde
and used in electrical fittings, adhesives, and finishes |
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