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Cobalt Complex of l‐(2‐Quinolylazo)‐2‐Phenanthrol(Co‐Qap) as a Visual Acid‐Base Indicator
Author(s) -
Virmani R. N.
Publication year - 1974
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.197400034
Subject(s) - chemistry , cobalt , base (topology) , molar ratio , bottle , chromatography , nuclear chemistry , inorganic chemistry , organic chemistry , mathematical analysis , mechanical engineering , mathematics , engineering , catalysis
Abstract Cobalt complex of 1‐(2‐quinolylazo)‐2‐phenanthrol (Co‐QAP) prepared by refluxing cobalt acetate and QAP in the molar ratio 1:2 has been used as a visual acid‐base indicator. The apparant indicator constant has been found to be 6.35. The solution of the indicator in dioxane is stable for at least fifteen days if stored in a dark coloured bottle, while in a transparent bottle it was found to be stable for eight days.