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Metal chromium chrome 99A Cr> 99.2 pure chrome block

John Vincent The Bioinorganic Chemistry of Chromium


Chromium exists in nature as complexes of two stable oxidation states – trivalent chromium(III) and hexavalent chromium(VI). Although trivalent chromium is required in trace amounts for sugar and lipid metabolism in humans and its deficiency may cause a disease called chromium deficiency; hexavalent chromium is toxic and carcinogenic. As chromium compounds were used in dyes and paints and the tanning of leather, these compounds are often found in soil and groundwater at abandoned industrial sites, now needing environmental cleanup and remediation. The Bioinorganic Chemistry of Chromium: From Biochemistry to Environmental Toxicology takes a critical look at what the biochemical data indicate about chromium's role in the body and the biological mechanisms of its toxicology. Topics covered include: What do we know about the biochemical roles and mechanisms of chromium? Is chromium an essential element in the mammalian diet? Is chromium(III) effective as a nutraceutical, a therapeutic agent, and as a supplement in animal feed? What is the biochemistry behind the toxicology of chromium(III) and chromium(VI):the mechanisms of metabolism, genetic and epigenetic effects, and disruption of cell signalling? What are the current chromium(VI) policies and positions from regulatory agencies? The Bioinorganic Chemistry of Chromium: From Biochemistry to Environmental Toxicology is an important contribution to the bioinorganic and trace element biochemical fields which will find a place on the bookshelves of bioinorganic chemists, biochemists, inorganic chemists, toxicologists, nutritionists and regulatory affairs professionals.

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50g grams High Purity 99.95% Electrolytic Chromium Cr Metal Sheet

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Chromium chunks, ≥99.99% trace metals basis Synonym: Chromium element CAS Number 7440-47-3. Empirical Formula (Hill Notation) Cr . Molecular Weight 52.00 . EC Number 231-157-5. MDL number MFCD00010944. PubChem Substance ID 24853287

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Metal Profile: Chromium - Properties, History & More

The mixture is ignited, resulting in the oxygen from the chromic oxide reacting with the aluminum to produce aluminum oxide and, thereby, liberating molten chromium metal that is 97-99% pure. According to US Geological Survey statistics, the largest producers of chromite ore in 2009 were South Africa (33%), India (20%), and Kazakhstan (17%).

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Подвесная люстра Crystal Lux производства Испания из коллекции Salvadore. В конструкции люстры Salvadore SP9H Black Chromium используются 9 белых стеклянных плафонов круглой формы и металлическая арматура цвета черный. Габаритные размеры люстры 200x890 мм. Дизайн люстры отлично подходит для гостиной. Устанавливается на потолок.

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