phosgene
n . 光气
光气
phosgene n 1 :
a colorless poisonous gas that smells like new -
mown hay ;
used in chemical warfare Phosgene \
Phos "
gene \,
a . [
Gr .
fw ^
s light the root of gi `
gnesqai to be born :
cf .
F .
phosg [`
e ]
ne .] (
Old Chem .)
Producing ,
or produced by ,
the action of light ; --
used specifically to designate a gas also called carbonyl chloride .
See {
phosgene },
n .,
and {
Carbonyl }.
[
1913 Webster PJC ]
phosgene \
phos "
gene \ (
f [
o ^]
s "
j [=
e ]
n or f [
o ^]
z "
j [=
e ]
n ),
n .
(
Chem .)
A reactive chemical substance ({
COCl2 }),
also called {
carbonyl choride },
used in synthesis of numerous substances .
In the First World War it was also used as a poisonous gas in combat .
[
PJC ]
Carbonyl \
Car "
bon *
yl \,
n . [
Carbon -
yl .] (
Chem .)
The radical ({=
CO }),
occuring ,
always combined ,
in many compounds ,
as the aldehydes ,
the ketones ,
urea ,
carbonyl chloride ,
etc .
[
1913 Webster ]
Note :
Though denoted by a formula identical with that of carbon monoxide ,
it is chemically distinct ,
as carbon seems to be divalent in carbon monoxide ,
but tetravalent in carbonyl compounds .
[
1913 Webster ]
{
Carbonyl chloride } (
Chem .),
a colorless gas , {
COCl2 },
of offensive odor ,
and easily condensable to liquid .
It is formed from chlorine and carbon monoxide ,
under the influence of light ,
and hence has been called {
phosgene },
or {
phosgene gas }; --
called also {
carbon oxychloride }.
It is used in chemical synthesis ,
and was also used as a poison gas in World War I .
[
1913 Webster PJC ]
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