Colcothar (noun) Definition, Meaning & Examples

noun Chemistry.
  1. the brownish-red oxide of iron produced by heating ferrous sulfate: used chiefly as a pigment in paints and theatrical rouge, and as a polishing agent.
noun
  1. a finely powdered form of ferric oxide produced by heating ferric sulphate and used as a pigment and as jewellers' rouge
Colcothar (noun) Definition, Meaning & Examples

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