tags
nitrogennitricphenolPhenolpicric acidacetonePyranitrolortho

video tutorial Mono-nitration of phenol

  • Goal: mononitration of phenol to produce ortho-nitrophenol, avoiding picric acid.
  • Approach: nitration in aqueous acidic medium with temperature control (ice bath), slow addition of phenol via addition funnel, and monitoring to minimize dinitration; followed by steam distillation to isolate the ortho isomer.
  • Result: ortho-nitrophenol obtained in about 22% yield (13 g from 40 g phenol); purification of the other products yielded a tar-like material that could not be cleanly purified; plan to refine purification or pursue alternative methods; a purer ortho-nitro phenol sample is available for future work, requests for definitive purification guidance.

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