Definition of Platinum sponge
(Chem.)
metallic
platinum
in
a
gray
,
porous
,
spongy
form
,
obtained
by
reducing
the
double
chloride
of
platinum
and
ammonium
.
It
absorbs
oxygen
,
hydrogen
,
and
certain
other
gases
,
to
a
high
degree
,
and
is
employed
as
an
agent
in
oxidizing
.
(Chem.)
See
under
Platinum
.
See also:
Platinum
Sponge
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Platina mohr
Platina yellow
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