Vauquelin, Louis

Vauquelin (1798) Vauquelin, Louis-Nicolas Second memoir on the metal contained in the red lead of Siberia Philosophical Magazine 1 (1798) 361-367... [Pg.495]

Louis-Nicolas Vauquelin (1763-1829) discovered the element in the semiprecious stone beryl. [Pg.32]

Nicolas Louis Vauquelin (1763-1829) discovers the element during the analysis of Siberian red lead ore J (PbCr04). [Pg.45]

Ecole Polytechnique, the Institute of Egypt, and the suburban Arcueil estates of Laplace and Berthollet. Like Gay-Lussac, the chemists Louis N. Vauquelin, Michel Eugene Chevreul, and Louis Jacques Thenard admitted well-recommended students to their private chemical laboratories. By the 1830s, Dumas and Victor Regnault were training students in larger numbers as part of the expected chemical curriculum. 84... [Pg.70]

Chromium (Cr, [ArP s1), name and symbol after the Greek xpio(ia (chroma, colour). Discovered (1780) by Nicholas Louis Vauquelin. [Pg.413]

Chromium - the atomic number is 24 and the chemical symbol is Cr. The name derives from the Greek chroma for color , from the many colored compounds of chromium. It was discovered in 1797 by tihe French chemist and pharmacist Nicolas-Louis Vauquelin. Vauquelin also isolated... [Pg.7]

Historically, chromium ore was known as Siberian red lead, which was used to make bright red paints. The source was soon identified as the mineral crocoite, and analysis indicated that it also contained lead. In 1797 the French chemist Louis-Nicolas Vauquelin (1763—1829) discovered chromium while studying some minerals that were collected in Siberia. To isolate the pure metal from its oxide, he first dissolved the lead out of the mineral with hydrochloric acid (HCl), leaving crystals of chromium oxide, which he then heated. To his surprise he ended up with crystals of pure chromium metal. [Pg.96]

Beryllium Be 1798 (Paris, France) Louis Vauquelin (French) 65... [Pg.395]

French chemist Louis-Nicolas Vauquelin Rare alkaline-earth metal derived from the mineral beryl of which emeralds and aquamarines are crystals. [Pg.225]

Nicolas-Louis Vauquelin, the discoverer of the metal chromium, was bom on May 16, 1763, in a little Normany village called St. Andre... [Pg.270]

Vauquelin, Nicolas-Louis, Note sur une nouvelle espece d Alcali mineral, ... [Pg.491]

The simple body concept provided an almost universally accepted way of expressing chemical composition, but the conditional assignment of any body as simple carried with it a philosophic discomfort frequently expressed. Nearly every chemical writer of this period who mentioned the idea of elements or simple bodies also took the trouble to emphasize the distinction between simple body and the philosophical element. The conditional nature of simple body that made it operationally useful also allowed the indefinite expansion of their number. Nearly twenty new metals were discovered and identified between 1789 and 1810, raising plaintive cries that there were too many elements, together with the hope that ultimately their numbers would be reduced. In 1796, Nicolas-Louis Vauquelin was almost apologetic in reporting a new simple body from his analysis of the red lead of Siberia [lead chromate] ... [Pg.216]

Vauquelin, Nicolas-Louis. LAnalyse du plomb rouge de Journal... [Pg.268]

The nicotine molecule consists of a pyrrolidine ring attached to a pyridine ring by a bond between carbon atoms in the two-ring systems. Nicotine was isolated in impure form from tobacco in 1809 by Louis Nicholas-Vauquelin (1763—1829). Vauquelin called the substance nicotianine. In 1826, Wilhelm Posselt (1806-1877) and Karl Ludwig Reimann (1804-1872), medical students at Heidelberg University, isolated pure nicotine and published dissertations on its pharmacology in 1828. Louis Henri Melsens (1814—1886) determined nicotines empirical formula. Ame Pictet (1857-1937) and P. Crepieux reported the synthesis of nicotine in 1903. [Pg.192]

Louis-Nicolas Vauquelin (1763-1829) discovered the pink compound tetraamminepalladium(II) tetrachloropalladate(II), [Pd(NH3)4][PdCl4].14 This compound, which contains coordinated palladium in both the cation and the anion, is still known as Vauquelin s Salt after its discoverer. The corresponding platinum compound, [Pt(NH3)4][PtCl4], was discovered by Heinrich Gustav Magnus (1802—1870).15 It constitutes the first discovered platinum ammine and is known as Magnus ... [Pg.2]

Laboratoire PCSM (UMR 7615), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris, 10 rue Vauquelin, 75231 Paris cedex 05, France l.monnerie noos.fr, jean-louis.halary espci.fr... [Pg.215]

Chromium Cr 24 Louis Vauquelin France Greek word "chroma" meaning "color"... [Pg.96]

Beryllium was discovered by French chemist Louis-Nicolas Vauquelin (1763—1829) in 1798. Vauquelin su ested the name glucinium, meaning sweet tasting, for the element because the element and some of its compounds have a sweet taste. The name beryllium was adopted officially in 1957. [Pg.53]

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