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Selenium, like manganese, can be used in small concentrations to decolorize glass, or in higher concentrations to impart a reddish color, caused by selenium nanoparticles dispersed in glass. It is a very important agent to make pink and red glass. When used together with cadmium sulfide, [9] it yields a brilliant red color known as "Selenium Ruby".
Brown FK: Kipper brown Food Brown 1 azo 8062-14-4: Brown HT: Chocolate brown HT Food Brown 3 20285 diazo 4553-89-3: Brown MX-5BR: Reactive brown 10 179060 azo 12225-67-1: Cadmium acetate: 77185 inorganic 543-90-8: Calcofluor white Fluorescent brightener 28 40622 stilbene 4193-55-9: Calconcarboxylic acid: Patton and Reeder's indicator azo 3737 ...
Ink is a gel, sol, or solution that contains at least one colorant, such as a dye or pigment, and is used to color a surface to produce an image, text, or design. Ink is used for drawing or writing with a pen , brush , reed pen , or quill .
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The color to the immediate right (color #A52A2A) that was chosen as the web color "brown"—a medium dark red—is the color traditionally called red-brown. That this color is a shade of red and not orange can be easily ascertained by inspecting its h (hue) code, which is 0, signifying a shade of red. The first recorded use of red-brown as a ...
Van Dyke (Vandyke) brown, also known as Cassel earth or Cologne earth, is a deep, rich, and warm brown colour often used in painting and printmaking. Early publications on the pigment refer to it as Cassel (or Kassel) earth or Cologne earth in reference to its city of origin; however, today it is typically called Van Dyke brown after the painter Anthony van Dyck.
Bismarck brown Y also called C.I. 21000 [1] and C.I. Basic Brown 1, [1] is a diazo dye with the idealized formula [(H 2 N) 2 C 6 H 3 N 2] 2 C 6 H 4. The dye is a mixture of closely related compounds. It was one of the earliest azo dyes, being described in 1863 by German chemist Carl Alexander von Martius. It is used in histology for staining ...
Brazilwood is a red-brown dye from either of two related trees. The original brazilwood, sappan wood (Caesalpinia sappan), is native to India and was exported to China by 900 BCE and to Europe via the Muslim world by the Early Middle Ages. Portuguese explorers discovered a similar tree growing in the New World and named the surrounding country ...