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A colorimetric Study of the reaction between vanadyl sulphate and catechol
Author(s) -
Bhattacharya P. K.,
Banerji S. N.
Publication year - 1962
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19623150117
Subject(s) - catechol , chemistry , colorimetry , molecule , inorganic chemistry , nuclear chemistry , polymer chemistry , organic chemistry , chromatography
Vanadyl sulphate, when mixed with catechol, undergoes a colour change from blue to violet. The violet colour is unstable and it turns violet‐black after some time. A colorimetric study of the reaction by using JOB'S continuous variation method reveals that at first a 1:2 complex is formed between vanadyl sulphate and catechol. The complex is stable only for a short time and it takes up one more molecule of catechol to form a 1:3 complex.