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Printable version; In other projects ... When used as a food coloring, it has E number E172. Stoichiometries ... Iron oxides are chemical compounds composed of iron ...
Chemical coloring of metals is the process of changing the color of metal surfaces with different chemical solutions. The chemical coloring of metals can be split into three types: electroplating – coating the metal surface with another metal using electrolysis. patination – chemically reacting the metal surface to form a colored oxide or ...
Clay earth pigments (naturally formed iron oxides) Raw umber (PBr7): a natural clay pigment consisting of iron oxide, manganese oxide and aluminum oxide: Fe 2 O 3 + MnO 2 + n H 2 O + SiO 2 + Al 2 O 3. When calcined (heated) it is referred to as burnt umber and has more intense colors. Raw sienna (PBr7): a naturally occurring yellow-brown ...
Glass coloring and color marking may be obtained in several ways. by the addition of coloring ions , [ 1 ] [ 2 ] by precipitation of nanometer-sized colloids (so-called striking glasses [ 1 ] such as "gold ruby" [ 3 ] or red "selenium ruby"), [ 2 ] Ancient Roman enamelled glass , 1st century, Treasure of Begram
Iron oxide pigments in jars: yellow, red, brown. Iron oxide red is a generic name of a ferric oxide pigment of reddish colors. Multiple shades based on both anhydrous Fe 2 O 3 and its hydrates were known to painters since prehistory. The pigments were originally obtained from natural sources, since the 20th century they are mostly synthetic.
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Electrochemical coloring of metals; Electrochemical fluorination; Electrochemical machining; Electrolytic iron; Electromagnetic vortex intensifier with ferromagnetic particles; Electrometallurgy; Electrowinning
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