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benzidine การใช้

ประโยคมือถือ
  • It is positive in the benzidine test and weakly positive in methyl red test.
  • Azo dyes derived from benzidine are carcinogens; exposure to them has classically been associated with bladder cancer.
  • Many intermediates used in dye manufacture such as ortho-toluidine, benzidine etc . were found to be carcinogenic.
  • Under Maddocks'leadership, the union became more campaigning, particularly in opposing the use of benzidine-based dyes.
  • Accordingly, the production of benzidine azo dyes was discontinued in the 1980s " in the most important western industrialized countries ".
  • All progeny of the injected cells could later be discerned by staining for HRP using benzidine substrate or visualized by fluorescence microscopy.
  • Upon treatment with the bis ( diazonium ) derivative of benzidine, 1-aminonaphthalene-4-sulfonic acid gives Congo red.
  • The risk from aromatic amines, particularly benzidine and a-and ?naphthylamine, was not well-established until the 1950s.
  • Besides glucose oxidase, the test kit contains a benzidine derivative, which is oxidized to a blue polymer by the hydrogen peroxide formed in the oxidation reaction.
  • Nonetheless, through conducting Benzidine tests upon each garment, he had concluded each bore evidence of bloodstains, whereas no blood had been discovered on the knife or water-bottle.
  • In terms of its physical properties, 4, 4'- benzidine is poorly soluble in cold water but can be recrystallized from hot water, where it crystallises as the monohydrate.
  • Thirty percent of bladder tumors probably result from occupational exposure in the workplace to carcinogens such as benzidine . 2-Naphthylamine, which is found in cigarette smoke, has also been shown to increase bladder cancer risk.
  • Kaifer and Stoddart in 1994 modify their molecular shuttle such a way that an electron-poor tetracationic cyclophane bead now has a choice between two docking stations : one electrochemical oxidation ( forming the benzidine radical ion ) and significantly both processes are reversible.
  • Following the testimony of Dr . Gardner, Dr . Roche Lynch took the witness stand to discuss the results of the Benzidine tests he had conducted upon Sangret's army blanket, uniform, water-bottle, and the knife discovered at Witley barracks.