![]() Chromium (IV) dioxide (CrO2) is a magnetic compound.In metallurgy to provide corrosion resistance and a shiny finish.As a catalyst in dyeing and tanning of leather.To manufacture molds for the firing of bricks.Rubies get their red color from chrome, and glass treated with chrome is emerald green in color. Chromium compounds are used as industrial catalysts and pigments (in light green, yellow, red and orange colors).However, the wastewater is toxic, so alternatives are being studied. About 90% of all leather is tanned with chrome.Chrome plating of plastics, which are often used in bathroom fittings, is also possible. Chrome-plated car and truck parts such as bumpers were once common. Chrome plating can be used to give steel a highly polished finish.Chromium is used to harden steel, make stainless steel (named because it does not rust) and make various alloys.The name of the element chromium (from Greek chrōmos, “colour”) connotes the pronounced and varied colorations of chromium compounds. ![]() The green colour of emerald, serpentine, and chrome mica and the red colour of ruby are due to small amounts of chromium. Chromium-plated car and lorry parts, such as bumpers, were once very common.Ĭhromium (Cr), chemical element of Group 6 (VIb) of the periodic table, a hard steel-gray metal that takes a high polish and is used in alloys to increase strength and corrosion resistance.Ĭhromium was discovered (1797) by the French chemist Nicolas-Louis Vauquelin and isolated as the metal a year later it was named for its multicoloured compounds. ![]() Chromium plating can be used to give a polished mirror finish to steel. Chromium is used to harden steel, to manufacture stainless steel (named as it won’t rust) and to produce several alloys. ![]()
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