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Chrome Orange
Chrome orange is a mixed oxide with the chemical formula Pb2CrO5. It can be made by treating a lead(II) salt with an alkaline solution of a chromate or by treating chrome yellow (PbCrO4) with strongly basic solution.. Synthesis and nanoparticles Pb2CrO5 can be synthesized with a gas-liquid precipitation process. Changing the pH controls whether PbCrO4 or Pb2CrO5 is created. Orthorhombic nanocrystals can be selectively synthesized in a facile room temperature solution for Pb2CrO5. Using a microwave-assisted ionic liquid (MAIL) method, bundle and rod-like nanocrystals of Pb2CrO5 were formed. The bundles look like bundles of straw, secured in the middle. In basic solution, single-crystalline Pb2CrO5 could be formed by heating lead acetate and potassium dichromate with microwave radiation for only 10 minutes at 90 celsius. The MAIL process is simple, fast, and does not employ surfactants. The presence of hydroxide changes the phase that is formed. Using NaOH, monoclinic Pb2CrO ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flaming June, By Frederic Lord Leighton (1830-1896)
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Flaming may refer to: * Anything set aflame or on fire * Flaming (Internet), the act of posting deliberately hostile messages on the Internet * Flame maple, the striped figures in maple woodwork prized for their beauty * Fläming, a region in Germany * Flaming drink, various kinds of fire-ignited alcoholic drinks * "Flaming" (song), a 1967 song by Pink Floyd from their album ''The Piper at the Gates of Dawn'' * The Flaming Lips, an American music group founded in 1983 * ''Flaming Pie'', an album by Paul McCartney, first released in 1997 * An alternative, British, name for Gassing (textile process) See also * * * Flame (other) * Flamboyant (other) Flamboyant is a style of Gothic architecture. Flamboyant may also refer to: *Flamboyant, the common English name of ''Delonix regia'', an ornamental tree *Flamboyant (album), ''Flamboyant'' (album), a 2019 album by Dorian Electra and its title tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Nicolas Vauquelin
Prof. Louis Nicolas Vauquelin FRS(For) HFRSE (16 May 1763 – 14 November 1829) was a French pharmacist and chemist. He was the discoverer of both chromium and beryllium. Early life Vauquelin was born at Saint-André-d'Hébertot in Normandy, France, the son of Nicolas Vauquelin, an estate manager, and his wife, Catherine Le Charterier. His first acquaintance with chemistry was gained as laboratory assistant to an apothecary in Rouen (1777–1779), and after various vicissitudes he obtained an introduction to A. F. Fourcroy, in whose laboratory he was an assistant from 1783 to 1791. Moving to Paris, he became a laboratory assistant at the Jardin du Roi and was befriended by a professor of chemistry. In 1791 he was made a member of the Academy of Sciences and from that time he helped to edit the journal '' Annales de Chimie'' ''(Chemical annals)'', although he left the country for a while during the height of the French Revolution. In 1798 Vauquelin discovered beryllium oxide b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead(II) Compounds
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is toxic, even in small amounts, especially to children. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and bases, and it tends to form covalent bonds. Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited to organolead compounds. Like the lighter members of the group, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inorganic Pigments
In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that 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. Some simple carbon compounds are often considered inorganic. Examples include the allotropes of carbon (graphite, diamond, buckminsterfullerene, etc.), carbon monoxide, carbon dioxide, carbides, and the following salts of inorganic anions: carbonates, cyanides, cyanates, and thiocyanates. Many of these are normal parts of mostly organic systems, including organisms; describing a chemical as inorganic does not necessarily mean that it does not occur within living things. History Friedrich Wöhler's conversion of ammonium cyanate into urea in 1828 is often cited as the starting point of modern ... [...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 Aluminum pigments * Ultramarine violet: (PV15) - a synthetic or naturally occurring sulfur containing silicate mineral. Copper pigments *Han purple: BaCuSi2O6. Cobalt pigments * Cobalt violet: (PV14) Co3(PO4)2. Manganese pigments *Manganese violet: NH4MnP2O7 (PV16) manganic ammonium pyrophosphate. Gold pigments *Purple of Cassius: Gold nanoparticles suspended in tin dioxide - Aux • SnO2. Blue pigments Aluminum pigments * Ultramarine (PB29): 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 (PB28): cobalt(II) aluminate. *Cerulean blue (PB35): cobalt(II) stannate. *Cer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museo De Arte De Ponce
Museo de Arte de Ponce (MAP) is an art museum located on Avenida Las Américas in Ponce, Puerto Rico.Commonwealth of Puerto Rico, Puerto Rico Tourism Company. Ven al Sur, page 20. San Juan, Puerto Rico, 2003. It houses a collection of European art, as well as works by Puerto Rican artists. The museum contains one of the most important Pre-Raphaelite collections in the Western Hemisphere, holding some 4,500 pieces of artMAP 2007 Annual Report Retrieved 10 June 2009. distributed among fourteen galleries. Museo de Arte de Ponce is the finest art museum in Puerto Rico. The largest art museum in the Caribbean, it has also been called one of the best in the |
Flaming June
''Flaming June'' is a painting by Sir Frederic Leighton, produced in 1895. Painted with oil paints on a square canvas, it is widely considered to be Leighton's magnum opus, showing his classicist nature. It is thought that the woman portrayed alludes to the figures of sleeping nymphs and naiads the Greeks often sculpted. ''Flaming June'' disappeared from view in the early 1900s and was rediscovered in the 1960s. It was auctioned shortly after, during a period of time known to be difficult for selling Victorian era paintings, where it failed to sell for its low reserve price of US$140 (the equivalent of $1,126 in modern prices). After the auction, it was promptly purchased by the Museo de Arte de Ponce in Ponce, Puerto Rico. It is currently on loan to the Metropolitan Museum of Art in New York City, where it will be on display until February 2024. Appraisal ''Flaming June'' was first begun as a motif to adorn a marble bath in one of Leighton's other works, ''Summer Slumber''. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederic Leighton
Frederic Leighton, 1st Baron Leighton, (3 December 1830 – 25 January 1896), known as Sir Frederic Leighton between 1878 and 1896, was a British painter, draughtsman, and sculptor. His works depicted historical, biblical, and classical subject matter in an academic style. His paintings were enormously popular, and expensive, during his lifetime, but fell out of critical favour for many decades in the early 20th century. Leighton was the bearer of the shortest-lived peerage in history; after only one day his hereditary peerage became extinct upon his death. Biography Leighton was born in Scarborough to Augusta Susan and Dr. Frederic Septimus Leighton (1799-1892), a medical doctor. Leighton's grandfather, Sir James Boniface Leighton (1769-1843), had been the primary physician to two Russian tsars - Alexander I and Nicholas I - and their families, and amassed a fortune while in their service. Leighton’s career was always cushioned by this family wealth, with his father ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Gallery
The National Gallery is an art museum in Trafalgar Square in the City of Westminster, in Central London, England. Founded in 1824, it houses a collection of over 2,300 paintings dating from the mid-13th century to 1900. The current Director of the National Gallery is Gabriele Finaldi. The National Gallery is an exempt charity, and a non-departmental public body of the Department for Digital, Culture, Media and Sport. Its collection belongs to the government on behalf of the British public, and entry to the main collection is free of charge. Unlike comparable museums in continental Europe, the National Gallery was not formed by nationalising an existing royal or princely art collection. It came into being when the British government bought 38 paintings from the heirs of John Julius Angerstein in 1824. After that initial purchase, the Gallery was shaped mainly by its early directors, especially Charles Lock Eastlake, and by private donations, which now account for two-t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre-Auguste Renoir
Pierre-Auguste Renoir (; 25 February 1841 – 3 December 1919) was a French artist who was a leading painter in the development of the Impressionism, Impressionist style. As a celebrator of beauty and especially femininity, feminine sensuality, it has been said that "Renoir is the final representative of a tradition which runs directly from Peter Paul Rubens, Rubens to Antoine Watteau, Watteau." He was the father of actor Pierre Renoir (1885–1952), filmmaker Jean Renoir (1894–1979) and ceramic artist Claude Renoir (1901–1969). He was the grandfather of the filmmaker Claude Renoir (1913–1993), son of Pierre. Life Youth Pierre-Auguste Renoir was born in Limoges, Haute-Vienne, France, in 1841. His father, Léonard Renoir, was a tailor of modest means, so, in 1844, Renoir's family moved to Paris in search of more favorable prospects. The location of their home, in rue d’Argenteuil in central Paris, placed Renoir in proximity to the Louvre. Although the young Renoir had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoenicochroite
Phoenicochroite, also known as melanochroite, is a lead chromate mineral with formula Pb2OCrO4. It forms striking orange red crystals. It was first discovered in 1839 in Beryozovskoye deposit, Urals, Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-ei .... It is named from the Greek word φοίυικος for "deep red" and χρόα for "color," in allusion to its color. References Lead minerals Chromate minerals Monoclinic minerals Minerals in space group 12 {{Mineral-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead(II) Chromate
Lead(II) chromate is the inorganic compound with the formula ( Pb Cr O4). It has a vivid yellow color and is generally insoluble. Two polymorphs of lead chromate are known, orthorhombic and the more stable monoclinic form. Monoclinic lead chromate is used in paints under the name chrome yellow. It occurs also as the mineral crocoite. Lead(II) chromate may also be known as chrome yellow, chromic acid lead(II) salt, canary chrome yellow 40-2250, Holtint Middle Chrome, chrome green, chrome green UC61, chrome green UC74, chrome green UC76, chrome lemon, crocoite, dianichi chrome yellow G, lemon yellow, king's yellow, Leipzig yellow, lemon yellow, Paris yellow, pigment green 15, plumbous chromate, pure lemon chrome L3GS. Structure Lead chromate adopts the monazite structure, meaning that the connectivity of the atoms is very similar to other compounds of the type MM'O4. Pb(II) has a distorted coordination sphere being surrounded by eight oxides with Pb-O distances ranging from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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