Chemical compound / From Wikipedia, the free encyclopedia. Thallium (I) oxide is the inorganic compound of thallium and oxygen with the formula Tl 2 O in which thallium is in its +1 oxidation state. It is black and produces a basic yellow solution of thallium (I) hydroxide (TlOH) when dissolved in water. It is formed by heating solid TlOH or Tl ...
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Thallium 81 mercury ← thallium → lead In↑Tl↓Uut Periodic Table - Extended Periodic Table General Name, Symbol, Number thallium, Tl, 81 Chemical series poor
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Thallium (I) oxide, also known as thallous oxide, is a chemical compound. Its chemical formula is Tl 2 O. It has thallium and oxide ions in it. The thallium is in its +1 oxidation state .
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noun. : a soft poisonous metallic element that resembles lead in physical properties, occurs sparsely in a number of common ores, and is used chiefly in the form …
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The thallium halides include monohalides, where thallium has oxidation state +1, trihalides in which thallium generally has oxidation state +3, and some intermediate halides containing thallium with mixed +1 and +3 oxidation states. These materials find use in specialized optical settings, such as focusing elements in research spectrophotometers. …
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Thallium (III) bromide, also known as thallic bromide, is made of thallium in its +3 oxidation state and bromide ions. It disproportionates at a low temperature to thallium (I) bromide and bromine. It can be made by reacting thallium (I) bromide with bromine in water or an organic solution. Thallium (I) triiodide, a black crystalline solid.
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Thallium, as a pharmaceutical cosmetic product, is applied for facial hair removal and fungal infections of the scalp. Thallium acetate is currently used as a catalyst in organic synthesis in the oxidation of olefins and hydrocarbons, and in epoxidation and polymerization reactions. Detection of Tl is a challenging task because its concentration …
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Thallium bromide is a chemical compound of thallium and bromine with a chemical formula TlBr. This salt is used in room-temperature detectors of X-rays, gamma-rays and blue light, as well as in near-infrared optics. It is a semiconductor with a band gap of 2.68 eV. The crystalline structure is of cubic CsCl type at room temperature, but it lowers to the …
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Thallium nitrate, also known as thallous nitrate, is a thallium compound with the formula TlNO3. It is a colorless and highly toxic salt. Introduction Thallium(I) nitrate
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thallous hydroxide. (redirected from Thallium (I) hydroxide) Also found in: Wikipedia .
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Encyclopedia article about Thallium(I) bromide by The Free Dictionary
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Encyclopedia article about Thallium(I) oxide by The Free Dictionary
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In humans, the daily thallium intake with food and water is about 1.6 micrograms (μ.g), and from the air, 0.05 μg. The biological role of thallium in the body is still unclear. Thallium is moderately toxic to plants and highly toxic to humans and other mammals. Poisoning by thallium and its compounds is possible during preparation and use.
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Thallium (Tl), chemical element, metal of main Group 13 (IIIa, or boron group) of the periodic table, poisonous and of limited commercial value. Like lead, thallium is a soft, low-melting element of low tensile strength. Freshly cut thallium has a metallic lustre that dulls to bluish gray upon
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Thallium trifluoride is an inorganic compound with the formula TlF3. It is a white solid. Apart from being one of two thallium fluorides, this compound is of only theoretical interest. It adopts the same structure as bismuth trifluoride and features an eight-coordinated Tl(III) center. Some evidence exists for the second polymorphism.
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THALLIUM(I) NITRATE Iupac Name：thallium(1+);nitrate CAS No.: 1 Molecular Weight：266.384 Modify Date.: 04:33 Introduction: A colorless crystalline solid melting at 206°C.Toxic by ingestion and skin absorption. Used to make other chemicals.
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Kids Encyclopedia Facts. Thallium. Thallium is a chemical element. It has the chemical symbol Tl. It has the atomic number 81. Its standard atomic weight is 204.4. It is found in Group 13 of the periodic table. Thallium is a gray metal that is very toxic.
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EPA is required to establish and phase in specific performance based standards for all air emission sources that emit one or more of the listed pollutants. Thallium selenide is included on this list. Clean Air Act as amended in 1990, Sect. …
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This Statement was prepared to give you information about thallium and to emphasize the human health effects that may result from exposure to it. The Environmental Protection …
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Thallium(I) iodide is a yellow solid. It does not dissolve in water. It turns red when heated gently. It is a reducing agent. It is very toxic like all thallium compounds. Preparation. It is made by reacting thallium with iodine or hydroiodic acid or by reacting any soluble thallium salt like thallium(I) sulfate with any iodide.
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S.C. Gad, T. Pham, in Encyclopedia of Toxicology (Third Edition), 2014. Toxicokinetics. Thallium and thallium salts are readily absorbed by virtually all routes, with …
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Thallium (I) chloride is a colorless odorless solid. It is very toxic. It is insoluble (does not dissolve) in cold water but dissolves a little in hot water. Otherwise, it is somewhat similar to potassium chloride in being colorless and silver chloride in being insoluble in water.
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Thallium (I) bromide, also known as thallous bromide, is a chemical compound. Its chemical formula is TlBr. It has thallium and bromide ions in it. The thallium is in its +1 oxidation state . Properties[ change | change source] Thallium (I) bromide is a yellow-white solid. It is similar to silver bromide.
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Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray post-transition metal that is not found free in nature. When isolated, thallium resembles tin, but discolors when exposed to air. Chemists William Crookes and Claude-Auguste Lamy discovered thallium independently in 1861, in residues of sulfuric acid production. Both …
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Encyclopedia article about Thallium(I) sulfate by The Free Dictionary
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Encyclopedia article about Thallium(I) chloride by The Free Dictionary
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Thallium (I) sulfide, also known as thallous sulfide, is a chemical compound. Its chemical formula is Tl 2 S. It has thallium and sulfide ions in it. The thallium is in its +1 oxidation state . Thallium (I) sulfide is a black solid. It reacts with …
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Thallium is a soft metal that oxidizes readily and dulls rapidly upon exposure to air. Its melting point is 303.6°C, and its boiling point, 1457°C. It has a specific heat capacity of …
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Thallium is a soft, malleable, lustrous silver-gray metal with a hexagonal close-packed crystalline structure. A member of Group 13 of the periodic table, it resembles aluminum in its chemical properties. In its physical properties it resembles lead. It forms univalent compounds similar to those of the alkali metals.
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Thallium (pronounced /ˈθæliəm/) is a chemical element with the symbol Tl and atomic number 81. This soft gray malleable poor metal resembles tin but discolors when …
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Thallium (I) sulfate is soluble in water and its toxic effects are derived from the thallium (I) cation. Since thallium sulfate is a simple powder with indistinctive properties, it can easily be mistaken for more innocuous chemicals. It can enter the body by ingestion, inhalation, or through contact with the skin.
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thallium. [ ′thal·ē·əm] (chemistry) A metallic element in group 13, symbol Tl, atomic number 81, atomic weight 204.383; insoluble in water, soluble in nitric and sulfuric acids, melts at 302°C, boils at 1457°C. (metallurgy) Bluish-white metal with tinlike malleability, but a little softer; used in alloys.
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Thallium. Thallium is a chemical element. It has the chemical symbol Tl. It has the atomic number 81. Its standard atomic weight is 204.4. It is found in Group 15 of the periodic table. Thallium is a gray metal that is very toxic.
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thallium salts (thallium (I) acetate, thallium (I) carbonate, thallium (I) chloride, thallium (I) nitrate, and thallium (I) sulfate) that were posted in 1988. The previous RfD values for …
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Thallium (III) fluoride. TlF 3 is a white crystalline solid, mp 550 °C. The crystal structure is the same as YF 3 and β -BiF 3 . In this the thallium atom is 9 coordinate, (tricapped trigonal prismatic). It can be synthesised by fluoridation of the oxide, Tl …
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