Microchimica Acta

, Volume 55, Issue 2, pp 218–222 | Cite as

Microanalysis of nitro compounds. II

Colorimetric determination of nitrophenols
  • Melvin Schrier
  • Andrew Fono
  • T. S. Ma
Article
First Online:
Received:

Summary

A colorimetric method for the determination of phenolic compounds containing the nitro function is described. It is based on the production of a yellow color when nitrophenols are treated with iminobispropylamine in monochlorobenzene solution. There is no interference due to the presence of carbonyl and carboxyl groups in the molecule. Relationship between absorbance and concentration is linear in the range of 1 to 20μg/ml for most nitrophenols. Isomeric compounds can be distinguished by the absorption spectra of their respective colored complexes.

Keywords

Absorption Spectrum Carboxyl Carbonyl Phenolic Compound Yellow Color 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Ein kolorimetrisches Verfahren zur Bestimmung phenolischer Nitroverbindungen wurde beschrieben. Es beruht auf der gelben Farbreaktion der Nitrophenole mit Imino-bis-propylamin in monochlorbenzolischer Lösung. Carbonyl-und Carboxylgruppen stören nicht. Absorption und Konzentration verhalten sieh bei den meisten Nitrophenolen zwischen 1 und 20μg/ml linear. Isomere Verbindungen können an dem Absorptionsspektrum ihrer gefärbten Komplexverbindungen unterschieden werden.

Résumé

On décrit une méthode colorimétrique pour le dosage des composés phénoliques contenant la fonction nitro. Elle est fondée sur la formation d'une coloration jaune quand les nitrophénols sont traités par l'imino-bispropylamine en solution dans le monochlorobenzene. Il n'y a pas d'interférence due à la présence de groupes carbonyles et carboxyles dans la molécule. La relation entre la densité optique et la concentration est linéaire dans le domaine de 1 à 20μg/ml pour la plupart des nitrophénols. On peut distinguer les composés isomères par les spectres d'absorption de leurs complexes colorés respectifs.

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Copyright information

© Springer-Verlag 1967

Authors and Affiliations

  • Melvin Schrier
    • 1
    • 2
  • Andrew Fono
    • 1
    • 2
  • T. S. Ma
    • 1
    • 2
  1. 1.The Research LaboratoryOtto B. May, Inc.Newark 5
  2. 2.Department of ChemistryCity University of New YorkBrooklynUSA

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