High Quality Content by WIKIPEDIA articles! Alizarin or 1,2-dihydroxyanthraquinone (also known as Mordant Red 11 and Turkey Red) is an organic compound with formula C14H8O4 that has been used throughout history as a prominent dye, originally derived from the roots of plants of the madder genus.
High Quality Content by WIKIPEDIA articles! An alkalide is a chemical compound in which alkali metals are anions (that is, they bear a negative charge). Such species are notable because alkali metals were previously thought to appear in salts only as cations. Alkalide compounds have also been synthesized containing a cation of the alkaline earth metal barium.
High Quality Content by WIKIPEDIA articles! The alkaline earth metals are a group of chemical elements in the periodic table with very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure and readily lose their two outermost electrons to form cations with charge +2. In the modern IUPAC nomenclature, the alkaline earth metals comprise the group 2 elements.
High Quality Content by WIKIPEDIA articles! The alkali metals are a series of chemical elements in the periodic table. In the modern IUPAC nomenclature, the alkali metals comprise the group 1 elements, along with hydrogen. The alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr).Hydrogen (H), although nominally also a member of group 1, rarely exhibits behavior comparable to the alkali metals. This group lies in the s-block of the periodic table; all alkali metals` outermost electrons lie in an s-orbital. The alkali metals provide one of the best examples of group trends in properties in the periodic table, with elements exhibiting well characterized homologous behavior. For instance,...
High Quality Content by WIKIPEDIA articles! Alkanes (also known as paraffins or saturated hydrocarbons) are chemical compounds that consist only of hydrogen and carbon atoms and are bonded exclusively by single bonds (i.e., they are saturated compounds) without any cycles (or loops; i.e., cyclic structure). Alkanes belong to a homologous series of organic compounds in which the members differ by a constant relative molecular mass of 14.
High Quality Content by WIKIPEDIA articles! Allantoin is a chemical compound with formula C4H6N4O3. It is also called 5-ureidohydantoin or glyoxyldiureide. It is a diureide of glyoxylic acid.
High Quality Content by WIKIPEDIA articles! Carbon is capable of forming many allotropes due to its valency. This is a list of known ones, which is being added to as more are discovered.
High Quality Content by WIKIPEDIA articles! Allotropy or allotropism is the property of some chemical elements to exist in two or more different forms, known as allotropes of these elements. Allotropes are different structural modifications of an element; the atoms of the element are bonded together in a different manner.
High Quality Content by WIKIPEDIA articles! Alloxan (2,4,5,6-tetraoxypyrimidine; 2,4,5,6-pyrimidinetetrone) is an oxygenated pyrimidine derivative. It is present as alloxan hydrate in aqueous solution.
High Quality Content by WIKIPEDIA articles! Alnico is an acronym referring to iron alloys which in addition to iron are composed primarily of aluminium (Al), nickel (Ni) and cobalt (Co), hence al-ni-co, with the addition of copper, and sometimes titanium. Alnico alloys are ferromagnetic, with a high coercivity (resistance to loss of magnetism) and are used to make permanent magnets. Before the development of rare earth magnets in the 1970s, they were the strongest type of magnet. Other trade names for alloys in this family are: Alni, Alcomax, Hycomax, Columax, and Ticonal.
High Quality Content by WIKIPEDIA articles! Alosetron (initial brand name: Lotronex; originator: GSK) is a 5-HT3 antagonist used for the management of severe diarrhea-predominant irritable bowel syndrome (IBS) in women only. It is currently marketed by Prometheus Laboratories Inc. (San Diego), also under the trade name Lotronex.
High Quality Content by WIKIPEDIA articles! The Aluminium industry in Russia was arguably founded on 14 May 1932 when the Volkhov smelter in the Leningrad Oblast produced its first batch of aluminium. One year later, the first aluminium was produced by the Dneprovsky smelter in Ukraine. Despite the fact that in later years these smelters were steadily boosting output, it was not enough to meet the growing demands of the economy and construction of new production facilities in Russia began.
High Quality Content by WIKIPEDIA articles! Acute aluminium phosphide poisoning (AAlPP) is a large, though under-reported, problem in the Indian subcontinent. Aluminium phosphide (AlP), which is readily available as a fumigant for stored cereal grains, is highly toxic when consumed from a freshly opened container. Death results from profound shock, myocarditis and multi-organ failure. Aluminium phosphide has a fatal dose of between 0.15 and 0.5 grams. It has been reported to be the most common cause of suicidal death in North India.
High Quality Content by WIKIPEDIA articles! Aluminium or aluminum (US English) is a silvery white member of the boron group of chemical elements. It has the symbol Al, and its atomic number is 13. It is not soluble in water under normal circumstances. Aluminium is the third most abundant element (after oxygen and silicon), and the most abundant metal, in the Earth`s crust. It makes up about 8% by weight of the Earth`s solid surface. Aluminium metal is too reactive chemically to occur natively. Instead, it is found combined in over 270 different minerals. The chief ore of aluminium is bauxite.
High Quality Content by WIKIPEDIA articles! Aluminium hydride (also known as alane) is an inorganic compound with the formula AlH3. It is a colourless pyrophoric solid. Although rarely encountered outside of research laboratories, alane and its derivatives are used as reducing agents in organic synthesis.
High Quality Content by WIKIPEDIA articles! An aluminum Christmas tree is a type of artificial Christmas tree that was popular in the United States from 1958 until about the mid-1960s. As its name suggests, the tree is made of aluminum, featuring foil needles and illumination from below via a rotating color wheel. The aluminum Christmas tree was used as symbol of the commercialization of Christmas in the highly acclaimed and successful 1965 television special, A Charlie Brown Christmas, which discredited its suitability as holiday decoration. By the mid-2000s aluminum trees began to gain in popularity once again. Aluminum Christmas trees found a secondary market online, often selling for high premiums. The trees have also shown up in...
High Quality Content by WIKIPEDIA articles! Aluminum wire is a type of wiring used in houses, power grids, and airplanes. Aluminum provides a much better conductivity to weight ratio than copper, and therefore is used in power wiring of some aircraft.
High Quality Content by WIKIPEDIA articles! In dentistry, amalgam is an alloy of mercury with various metals used for dental fillings. It commonly consists of mercury (50%), silver (~22-32% ), tin (~14%), copper (~8%), and other trace metals. In the 1800s, amalgam became the dental restorative material of choice due to its low cost, ease of application, strength, and durability.
High Quality Content by WIKIPEDIA articles! The American Silver Eagle is the official silver bullion coin of the United States. It was first released by the United States Mint on November 24, 1986. It is struck only in the one-troy ounce size, which has a nominal face value of one dollar and is guaranteed to contain one troy ounce of 99.9% pure silver. It is authorized by Title II of Public Law 99-61 (Liberty Coin Act, approved July 9, 1985) and codified as 31 U.S.C. § 5112(e)-(h). Its content, weight, and purity are certified by the United States Mint. In addition to the bullion version, the United States Mint has produced a proof version and an uncirculated version for coin collectors. The Silver Eagle has been produced at three...
High Quality Content by WIKIPEDIA articles! Amine oxidases (AO) are enzymes that catalyze the oxidation of a wide range of biogenic amines including many neurotransmitters, histamine and xenobiotic amines. There are two classes of amine oxidases: flavin-containing (EC 1.4.3.4) and copper-containing (EC 1.4.3.6). Copper-containing AO act as a disulphide-linked homodimer. They catalyse the oxidation of primary amines to aldehydes, with the subsequent release of ammonia and hydrogen peroxide, which requires one copper ion per subunit and topaquinone as cofactor: