![]() ![]() ![]() Chromium oxide green is one of four oxides of chromium, chemical formula Cr2O3.Ĭhromium oxide green is commonly called "chrome green" when used as a pigment however it was referred to as “viridian” when it was first discovered.Ĭhromium oxide green is a very refractory ceramic colorant (even a 50% mix with a high borax frit will not even begin to melt it in a crucible).Ĭhrome oxide is the only stable oxide of the metal chromium.Ĭhromium oxide green is a bright to dark green crystalline powder insoluble in alkalis and acids.Ĭhromium oxide green is manufactured from the mineral Chromite mined in southern Africa, Asia, Turkey and Cuba.Īs with other powerful coloring agents, chrome must be milled fine enough to eliminate specking in glass or glaze.Ĭhromium is a "fast" colorant, meaning can produce strong green colors under all furnace conditions, slow or fast, reducing or oxidizing.Ĭhromium oxide green is also a flat colorant (due to its refractory nature), it usually produces an army helmet opaque green.Ĭhromium oxide green is powerful, typically only 2% will produce a dark color.Ĭhromium oxide green cannot be used to make a metallic glaze.Ĭhrome oxide is usually employed in raw glazes whereas potassium dichromate is used in fritted glazes.Ĭhromium oxide is a bright green, odorless powder.Ĭhromium oxide green pigments are thermally stable and insoluble in water.Ĭhromium oxide pigments, also called chromium oxide green pigments, consist of chromium(III) oxide, Cr2O3,Mr 151.99. ![]() Chromium oxide green is among the ten most abundant compounds in the Earth's crust. ![]()
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