Venetian red
A coloring earth of a deep, reddish brown, which,
in its natural form, may consist of nearly pure
ferric oxide (Fe.,O) of the hematite type. It is
prepared synthetically by calcining ferrous
sulfate in the presence of lime. and is then known
as "caput mortuum." It is used in coloring paper.
Also called "India red" or "Indian red." (72 )
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