2,6-Dibromoquinonechlorimide

File:2,6-Dibromoquinonechlorimide.png 2,6-Dibromo-4-(chloroimino)cyclohexa-2,5-dien-1-one 537-45-1 10378 208-667-1 10835 H750J4PI0N 3276933 1S/C6H2Br2ClNO/c7-4-1-3(10-9)2-5(8)6(4)11/h1-2H JYWKEVKEKOTYEX-UHFFFAOYSA-N C1=C(C(=O)C(=CC1=NCl)Br)Br 6 2 2 1 1 1 yellow powder 01 07 Danger 240 312 315 319 335 210 220 234 261 264 271 280 302+352 304+340 305+351+338 312 321 322 332+313 337+313 362 363 370+378 370+380+375 403+233 403+235 405 411 420 501 2,6-Dibromoquinonechlorimide is used in chemical analysis and chromatography to detect phenolic chemicals.Ettinger M. B. Ruchhoft C. C. 1948-12-01 Determination of Phenol and Structurally Related Compounds by Gibbs Method https://pubs.acs.org/doi/abs/10.1021/ac60024a018 Analytical Chemistry en 20 12 1191–1196 10.1021/ac60024a018 0003-2700 subscription In the presence of phenolic substances it turns indigo in colour. In the presence of aflatoxin it turns green. 2,6-Dibromoquinonechlorimide explodes if heated above 120 °C and decomposes slowly over 60 °C.Lewis Robert A. Hawley's Condensed Chemical Dictionary 2016 John Wiley & Sons 978-1-118-13515-0 441 https://books.google.com/books?id=EwV0CgAAQBAJ&pg=PA441 en 2,6-Dibromoquinonechlorimide is used in a buffer solution around pH 9.4. It is very sensitive and can detect down to 0.05 parts per million of phenols. The mechanism is the chlorimide group (=NCl) reaction with the phenol to produce an indophenol, with two rings joined via an =N- link.Gibbs H. D. Phenol Tests. III. The Indophenol Test The Journal of Biological Chemistry 1 April 1927 72 649–664 10.1016/S0021-9258(18)84338-1 http://www.jbc.org/content/72/2/649.full.pdf 13 January 2020 free References Category:Chlorimides Category:Quinones Category:Organobromides