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Phosgene is an organic chemical compound with the formula COCl 2. ... World production of this compound was estimated to be 2.74 million tonnes in 1989. [9]
Carbolabs, Inc., is an American chemistry company specializing in reactions utilizing phosgene, founded by Joe Karabinos in 1967.Originally located in the basement of his home in Bethany, Connecticut, [1] it was not until the following year that the business was moved into its own dedicated building.
The main polycarbonate material is produced by the reaction of bisphenol A (BPA) and phosgene COCl 2. The overall reaction can be written as follows: The first step of the synthesis involves treatment of bisphenol A with sodium hydroxide, which deprotonates the hydroxyl groups of the bisphenol A. [6] (HOC 6 H 4) 2 CMe 2 + 2 NaOH → Na 2 (OC 6 ...
Owing to the hazardous nature of phosgene, the production of isocyanates requires special precautions. [1] A laboratory-safe variation masks the phosgene as oxalyl chloride. [5] Also, oxalyl chloride can be used to form acyl isocyanates from primary amides, which phosgene typically dehydrates to nitriles instead. [6]
Diphosgene converts to phosgene upon heating or upon catalysis with charcoal. It is thus useful for reactions traditionally relying on phosgene. For example, it convert amines into isocyanates, secondary amines into carbamoyl chlorides, carboxylic acids into acid chlorides, and formamides into isocyanides. Diphosgene serves as a source of two ...
The daily Svenska Dagbladet newspaper said authorities had found traces of phosgene. The gas has a strong odor that can cause vomiting and breathing trouble and was used as a weapon in World War I.
German phosgene came in the form of diphosgene, codenamed Grün Kreuz (Green cross). This was less effective than its allied counterpart, being less toxic and slower to evaporate, but was easier to handle in shell manufacture early in the war. [35] Phosgene was a potent killing agent, deadlier than chlorine.
Phosgene, notably used as a chemical weapon during World War I, is also used as an industrial reagent and building block in synthesis of pharmaceuticals and other organic compounds. Because of safety issues, phosgene is almost always produced and consumed within the same plant and extraordinary measures are made to contain this gas.