Abstract
Under the activating influence of short-wave ultraviolet light, diphenylamine and nitrate ions in solution or on filter paper react to yield a yellow-colored product. Between pH 4 and 10 this consists mainly of 2-nitrodiphenylamine and 4-nitrodiphenylamine. Over this range of pH, the absorption maxima at 405 mμ did not shift; however, the intensity of absorption appeared to reach a minimum at or near neutrality and then increase rapidly as the solution was made more alkaline. The reaction rate was not affected by lowering the concentration of diphenylamine from 0.38% to 0.038%. A similar change in nitrate concentration decreased the rate 5.4 times. No evidence of nitroso compounds was found. Possible mechanisms are suggested.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
