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O-carboxyphenyl azo chromotropic acid (sodium salt) as an analytical reagent

Part I Chelatometric titration of thorium, zirconium and iron

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Summary

O-carboxyphenyl azo chromotropic acid (sodium salt), chromotrope 2C, is introduced as a new metallochromic indicator. Its colour reactions with a few metal ions have been utilised for their quantitative chelatometric determinations with EDTA.

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References

  1. Fritz, J. J., and J. J. Ford: Analyt. Chemistry 25, 1640 (1953); of. Z. analyt. Chem. 143, 215 (1954).

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  2. Schwarzenbach, G., and W. Biedermann: Helv. chim. Acta 31, 678 (1948).

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Authors and Affiliations

  1. Department of Inorganic and Analytical Chemistry, Jadavpur University, Calcutta, India

    A. K. Majumdar & C. P. Savariar

Authors
  1. A. K. Majumdar
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  2. C. P. Savariar
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Majumdar, A.K., Savariar, C.P. O-carboxyphenyl azo chromotropic acid (sodium salt) as an analytical reagent. Z. Anal. Chem. 174, 197–200 (1960). https://doi.org/10.1007/BF00462441

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  • DOI: https://doi.org/10.1007/BF00462441

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