Blue vitriol - Copper Sulphate
White vitriol - Zinc Sulphate
Oil of vitriol - Sulphuric Acid
In chemistry, vitriol
is an archaic name for a sulfate
Black lead - Graphite
The compound zinc oxide (ZnO) is called philosopher's wool.
As part of their rituals, would burn zinc in air and collect the residue, which
formed into white woolly tufts.
Zinc oxide has many uses: as white pigment in paints,
component in zinc ointment for treating skin diseases, material in sun screens
and sun lotions, in rubber manufacture and in photocopying products.
its superficially similar appearance led to its confusion
with the precious metal, and thus the name 'Fool's gold.'
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