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Example of Jmol coloring. The following table shows colors assigned to each element by some popular software products. Column C is the original assignment by Corey and Pauling. [3] Column K is that of Koltun's patent. [4] Column J is the color scheme used by the molecular visualizer Jmol. [9]
Aluminum pigments. Ultramarine (PB29): a synthetic or naturally occurring sulfur containing silicate mineral - Na 8–10 Al 6 Si 6 O 24 S 2–4 (generalized formula); Persian blue: made by grinding up the mineral Lapis lazuli.
C.I. number Class CAS number Acid Black 52 Acid Black 52 15711 azo 5610-64-0: Acid Blue AS Weak Acid Blue Acid Blue 25: 62055 anthraquinone: 6408-78-2: Acid fuchsin: Acid Magenta Acid Rubin Acid Violet 19 42685 triarylmethane: 3244-88-0: Acid orange 3 Acid orange 3 10385 nitro 6373-74-6: Acid orange 19: Acid Orange 19 14690 azo: 3058-98-8: Acid ...
The color of chemicals is a physical property of chemicals that in most cases comes from the excitation of electrons due to an absorption of energy performed by the chemical. The study of chemical structure by means of energy absorption and release is generally referred to as spectroscopy .
The Munsell system describes a color in three dimensions, hue, value (lightness), and chroma (color purity), where chroma is the difference from gray at a given hue and value. By the middle 20th century, standardized methods for pigment chemistry were available, part of an international movement to create such standards in industry.
Both of these are now out-of-print in their paper versions, but are available free of charge in electronic versions. After the release of a draft version for public comment in 2004 [4] and the publication of several revised sections in the journal Pure and Applied Chemistry, a fully revised version was published in print in 2013. [5] [2]