Louis Lemoine, French Divisional General during the French Revolutionary and Napoleonic Wars from 1789 to 1815 CITATION [CLOSE] Generals Who Served in the French Army during the Period 1789-1815. (Retrieved 2015, April 8) Louis Lemoine.
Iron Oxide Pigments / Synthetic Iron Oxide. Synthetic Iron Oxides have become increasingly important due to their pure hue, consistent properties, and tinting strength. Single-component forms are mainly produced with red, yellow, orange and black colours. Their composition corresponds to that of minerals hematite, goethite, lepidocrocite, and magnetite. Brown pigments usually consist of mixtures of red and/or yellow and/or black iron oxides.
Iron oxides and oxide-hydroxides are widespread in nature, play an important role in many geological and biological processes, and are widely used by humans, e.g., as iron ores, pigments, catalysts, in thermite (see the diagram) and hemoglobin. Common rust is a form of iron(III) oxide. Iron oxides are widely used as inexpensive, durable pigments in paints, coatings and colored concretes. Colors commonly available are in the earthy end of the yellow/orange/red/brown/black range. When used as a food coloring, it has E number E172.