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Aureolin
Aureolin (sometimes called cobalt yellow) is a pigment sparingly used in oil and watercolor painting. Its color index name is PY40 (40th entry on list of yellow pigments). It was first made in 1831 by Nikolaus Wolfgang Fischer in Breslau characterizing it as "Doppelsalze" or double-salts and its chemical composition is potassium cobaltinitrite. He characterized it again and wrote more extensively about it in 1842, naming it "Salpetrichtsaures Kobaltoxydkali". In 1851–1852, Edouard Saint-Evre synthesized cobalt yellow independently. He is credited with the introduction of cobalt yellow as an artists pigment. The investigation by Gates gives the exact modern procedures for the preparation of aureolin and also the methods for its identification in paintings.- Aureolin is rated as permanent in some reports but there are other sources which rate it as unstable in oils but pronounce it stable in watercolors. Others find it unstable in watercolors, fading to greyish or brownish hue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pigments
A pigment is a powder used to add or alter color or change visual appearance. Pigments are completely or nearly solubility, insoluble and reactivity (chemistry), chemically unreactive in water or another medium; in contrast, dyes are colored substances which are soluble or go into solution at some stage in their use. Dyes are often organic compounds whereas pigments are often inorganic compound, inorganic. Pigments of prehistoric and historic value include ochre, charcoal, and lapis lazuli. Economic impact In 2006, around 7.4 million tons of inorganic chemistry, inorganic, organic chemistry, organic, and special pigments were marketed worldwide. According to an April 2018 report by ''Bloomberg Businessweek'', the estimated value of the pigment industry globally is $30 billion. The value of titanium dioxide – used to enhance the white brightness of many products – was placed at $13.2 billion per year, while the color Ferrari red is valued at $300 million each yea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potassium Cobaltinitrite
Potassium hexanitritocobaltate(III) is a salt with the formula K3 o(NO2)6 It is a yellow solid that is poorly soluble in water. The compound finds some use as a yellow pigment under the name Indian Yellow. The salt features potassium cations and an trianionic coordination complex. In the anion, cobalt is bound by six nitrito ligands, the overall complex having octahedral molecular geometry In chemistry, octahedral molecular geometry, also called square bipyramidal, describes the shape of compounds with six atoms or groups of atoms or ligands symmetrically arranged around a central atom, defining the vertices of an octahedron. The o .... The oxidation state of cobalt is 3+. Its low-spin d6 configuration confers kinetic stability and diamagnetism. The compound is prepared by combining cobalt(II) and nitrite salts in the presence of oxygen. The corresponding sodium cobaltinitrite is significantly more soluble in water. The compound was first described in 1848 by Nikolaus Wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nikolaus Wolfgang Fischer
Nikolaus Wolfgang Fischer (15 January 1782 – 19 August 1850) was a German chemist. He first synthesized the Potassium cobaltinitrite Potassium hexanitritocobaltate(III) is a salt with the formula K3 o(NO2)6 It is a yellow solid that is poorly soluble in water. The compound finds some use as a yellow pigment under the name Indian Yellow. The salt features potassium cations and ...later used as Aureolin pigment. References * 1782 births 1850 deaths 19th-century German chemists 18th-century German chemists {{Germany-chemist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potassium Cobaltinitrite
Potassium hexanitritocobaltate(III) is a salt with the formula K3 o(NO2)6 It is a yellow solid that is poorly soluble in water. The compound finds some use as a yellow pigment under the name Indian Yellow. The salt features potassium cations and an trianionic coordination complex. In the anion, cobalt is bound by six nitrito ligands, the overall complex having octahedral molecular geometry In chemistry, octahedral molecular geometry, also called square bipyramidal, describes the shape of compounds with six atoms or groups of atoms or ligands symmetrically arranged around a central atom, defining the vertices of an octahedron. The o .... The oxidation state of cobalt is 3+. Its low-spin d6 configuration confers kinetic stability and diamagnetism. The compound is prepared by combining cobalt(II) and nitrite salts in the presence of oxygen. The corresponding sodium cobaltinitrite is significantly more soluble in water. The compound was first described in 1848 by Nikolaus Wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grumbacher
Grumbacher is a US brand of art materials. Grumbacher offers products for artists including acrylic paints, oil paints, watercolor paints and other painting media, as well as brushes. Overview The company was founded in 1905 by Max Grumbacher. It became a subsidiary of Sanford L.P., a Newell Rubbermaid company, on Gablind.com until September 2006, when it was acquired by Chartpak, Inc., an art materials and office products company headquartered in Leeds, Massachusetts
Leeds is a village in the western portion of the city of Northampton, Massachusetts, United States, bordering Williamsburg—alo ...
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Winsor & Newton
Winsor & Newton (also abbreviated W&N) is an England, English manufacturing company based in London that produces a wide variety of fine art products, including acrylic paint, acrylics, oil paint, oils, watercolour painting, watercolour, gouache, brushes, canvases, papers, inks, graphite pencil, graphite and coloured pencil, coloured pencils, Marker pen, markers, and charcoals. History The company was founded in 1832 by William Winsor and Henry Newton (Winsor & Newton Founder), Henry Newton. The firm was originally located at Henry Newton's home in 38 Rathbone Place, London. This was then part of an artists' quarter in which a number of eminent painters, including John Constable, Constable, had studios, and other colourmen were already established. The standards of quality for W&N's most renowned line of kolinsky sable-hair brush, kolinsky sable brush, the Series 7, began after Queen Victoria ordered it should be "the very finest watercolour brush" in 1866. A few months befor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sennelier
Sennelier is a French manufacturing company of art materials, mostly famous for its hand selected pigments. The company produces a wide range of paint products, including acrylic, oil, watercolor, gouache, oil and soft pastel, india ink, tempera, and other media. History Gustave Sennelier opened this art supply store in 1887, near the famous Ecole des Beaux-Arts. Initially, Sennelier sold paints made by various manufacturers; later he chose to produce his own paints using local pigments and binders procured from his travels across Europe. Anecdotally, it is believed that Sennelier gained prominence at this time. Art-supply shops were ubiquitous, and Cézanne, Gauguin, and many other artists would shop around in the neighborhood, in search of particular shades of paint. If Gustave Sennelier didn't stock the color, he would create it for his painters. In 1949, Henri Sennelier, Gustave's son, created the first professional-quality oil pastel for Pablo Picasso. Picasso wanted colo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Colors
These are the lists of colors; * List of colors: A–F * List of colors: G–M * List of colors: N–Z * List of colors (alphabetical) * List of colors by shade * List of color palettes * List of Crayola crayon colors * List of RAL colours * List of X11 color names See also * Index of color-related articles * List of dyes {{DEFAULTSORT:colors Shades of color, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Inorganic Pigments
The following list includes commercially or artistically important inorganic pigments of natural and synthetic origin.. Purple pigments Aluminosilicate pigments * Ultramarine violet (): a synthetic or naturally occurring sulfur containing silicate mineral. Copper pigments * Han purple: BaCuSi2O6. Cobalt pigments * Cobalt violet (): Co3(PO4)2. Manganese pigments * Manganese violet: NH4MnP2O7 () manganic ammonium pyrophosphate. Blue pigments Aluminosilicate pigments * Ultramarine (): a synthetic or naturally occurring sulfur containing silicate mineral - (generalized formula) * Persian blue: made by grinding up the mineral Lapis lazuli. The most important mineral component of lapis lazuli is lazurite (25% to 40%), a feldspathoid silicate mineral with the formula . Cobalt pigments *Cobalt blue (): cobalt(II) aluminate. * Cerulean blue (): cobalt(II) stannate. * Cerium uranium blue Iron pigments * Prussian blue (): a synthetic inert pigment made of iron and cyanide: C18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inorganic Pigments
An inorganic compound is typically a chemical compound that lacks carbon–hydrogen bondsthat is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemistry''. Inorganic compounds comprise most of the Earth's crust, although the compositions of the deep mantle remain active areas of investigation. All allotropes (structurally different pure forms of an element) and some simple carbon compounds are often considered inorganic. Examples include the allotropes of carbon (graphite, diamond, buckminsterfullerene, graphene, etc.), carbon monoxide , carbon dioxide , carbides, and salts of inorganic anions such as carbonates, cyanides, cyanates, thiocyanates, isothiocyanates, etc. Many of these are normal parts of mostly organic systems, including organisms; describing a chemical as inorganic does not necessarily mean that it cannot occur within living things. History Friedrich Wöhler's conv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
