Iron Chromate

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Iron chromate is a brownish powder that creates darker colors when added as a colorant to engobes, slips and underglazes. It is used in glazes to produce gray (with feldspar), brown (with zinc), red (with tin) or black depending on the base glaze and percentage and other coloring oxides present.

Chemical Formula: Fe₂(CrO₄)₃

Synonyms: Ferric Chromate, Chromite