A Manual of the Chemistry of the Carbon Compounds

106 THE CHEMISTRY OF
rhombic
(CHO2)aPb,
priBms,
crystalizing
which
from
are
a
only
hot
sparingly
aqueous
soluble
solution
in
in
cold
white,
water.
shining
to
JSUver
the light rapidly
Formate
blackens. When
CHOaAg
healed
is
with
a white
water
precipitate,
it is decom
w
posed, metalic silver separating out, whilst carbon dioxide escapes:—
carbon
When
dioxide
aqueous
is given
formic
of,
acid
and
is
mercuroufl
gently heated
formate
with
crystalizes
mercuric
out
oxid
white shining scales J—
3 C0 | J o + 2HgO
of
On
the
boiling
silver salt
this
ensues,
salt with
metalic
water,
mercury
a decomposition
and carbon
analogous
dioxide
to
bei
t
use
formed.
of as
These
a means
reactions
for detecting
of the
formic
silver and
acid.
mercury salts are ma
Methyl Formate QJT I- 0 is obtained by distiling
with sodium formate:—
2C0H
2 ffa
33**4.
It is
Chlorine
a colourless
acts
liquid,
on it slowly
having
in
a
the
pleasant
sunlight,
smel,
perehloro
and boiling
formate f, Y O being formed, a colourless liquid, possessin
pungent
through a
smel,
glass
and
tube
boiling
heated
at
to
about
350°,
180°.
it is transformed
When its
into
vapour
carbonyl
is pa
dichloride;—
8}
Methyl CbloroformaU or COG1) Methyl CM
formed
colourless
by
liquid,
the action
possessing
of carbonyl
a sufocating
dichloride
smel,
upon
and boiling
anhydrous
at 76°,
methy
is
alcohol
between
Fornmmide
ammonium formate
COH-NHg.—This
and hydrocyanic
compound,
acid, is
standing
obtained
interm
heating ammonium formate to 140° in the presence of urea, whic
by
is transformed into ammonium carbonate by the water given of,
dry
Fonnamide
ammonia,
can
and
also
heating
be
the
obtained
mixture
by saturating
in sealed
ethyl
glass
formate
tubes for
with
days in a water-bath:—
°°J } 0 + NH8 = COH.NH, + C3H6.0H
2 5/