Synonymer & Information om | Engelska ordet DICHROMATE

Exempel på hur man kan använda DICHROMATE i en mening

• Its organic synthesis involves dissolving aniline, p-toluidine, and o-toluidine in sulfuric acid and water in a roughly 1:1:2 ratio, then adding potassium dichromate.
• Chromic acid is jargon for a solution formed by the addition of sulfuric acid to aqueous solutions of dichromate.
• The discoloration of the originally bright yellow zinc yellow (zinc chromate) to a brownish color is due to the chemical reaction of the chromate ions to orange-colored dichromate ions.
• From 1957 to 1962 large amounts of industrial waste, including millions of gallons of chromic, hydrofluoric, nitric, sulfuric, and hydrochloric acids, dichromate, cyanide, and carbon tetrachloride, were deposited into this landfill.
• Formerly, sodium sulfate was also a by-product of the manufacture of sodium dichromate, where sulfuric acid is added to sodium chromate solution forming sodium dichromate, or subsequently chromic acid.
• Invented in 1884 by Paul Vieille, the most common formulations are based on nitrocellulose, but the term was also used to describe various picrate mixtures with nitrate, chlorate, or dichromate oxidizers during the late 19th century, before the advantages of nitrocellulose became evident.
• Zenker's fixative contains mercuric chloride ("corrosive sublimate"), potassium dichromate, sodium sulfate, water, and acetic acid.
• Potassium dichromate is an oxidising agent in organic chemistry, and is milder than potassium permanganate.
• The first aniline dye-stuff to be prepared on a manufacturing scale was mauveine, which was obtained by Sir William Henry Perkin by heating crude aniline with potassium dichromate and sulfuric acid.
• In the original version of the printing process, carbon tissue (a temporary support sheet coated with a layer of gelatin mixed with a pigment—originally carbon black, from which the name derives) is bathed in a potassium dichromate sensitizing solution, dried, then exposed to strong ultraviolet light through a photographic negative, hardening the gelatin in proportion to the amount of light reaching it.
• Lead dioxide anodes are inexpensive and were once used instead of conventional platinum and graphite electrodes for regenerating potassium dichromate.
• Sodium dithionate is a very stable compound which is not oxidized by permanganate, dichromate or bromine.
• Sodium chromate is converted into other hexavalent chromium compounds such as chromium trioxide and various salts of chromate and dichromate.
• Gum bichromate, or gum dichromate as it is also known, is a photographic printing process invented in the early days of photography when, in 1839, Mungo Ponton discovered that dichromates are light sensitive.
• Finally Butlerov in 1873 came up with the correct structures after he independently synthesised the compound trimethylacetic (pivalic) acid which Friedel had obtained earlier by oxidizing with a dichromate.
• Orange colored dichromate has photosensitivity when it is mixed with colloids such as gum arabic, albumen, or gelatin.
• Chromyl chloride can be prepared by the reaction of potassium chromate or potassium dichromate with hydrogen chloride in the presence of sulfuric acid, followed by distillation.
• From 1957 to 1962 large amounts of industrial waste, including millions of gallons of hydrofluoric, nitric, sulfuric, and hydrochloric acids, dichromate, cyanide, and carbon tetrachloride, were deposited into an unlined landfill located in the south shores section of Mission Bay Park immediately east of SeaWorld.
• Finally, caesium dichromate (itself derived via salt metathesis from ammonium dichromate) yields the chromate following alkalinisation with caesium hydroxide:.
• Photosensitive films containing PVA, ammonium dichromate, and a phosphor are spin-coated as aqueous slurries in the production of the phosphor raster of television screens and other devices.

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