Phthalocyanines as oxidation-reduction indicators |
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| Authors: | T. P. Sastri and G. Gopala Rao |
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| Affiliation: | (1) Department of Chemistry, Andhra University, Waltair, India |
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| Abstract: | Summary Copper phthalocyanine tetrasulphonic acid has been found to work satisfactorily as an inside indicator in the cerimetric titration of hydro-quinone and metol. It has the advantage that the indicator correction in titrations with 0.01 N solutions of ceric sulphate is much less than with the ferroin indicator, amounting to only 0.02 ml for two drops of the indicator solution.Part II: See Z. analyt. Chem. 163, 1 (1958). |
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