A spectrophotometric study of Iron (III) Complex of 1-hydroxy 2-naphthoic Acid

Autor:	V. B. S. Chauhan, Sarvagya S. Katiyar
Rok vydání:	1965
Předmět:	Mole ratio Chemistry Stability constants of complexes Slope ratio Ph range Analytical chemistry Composition (visual arts) Absorption (chemistry) Deep blue Naphthoic acid Nuclear chemistry
Zdroj:	Journal f�r Praktische Chemie. 30:149-154
ISSN:	1521-3897 0021-8383
DOI:	10.1002/prac.19650300307
Popis:	The interaction between iron (III) and 1-hydroxy 2-naphthoic acid in pH range 2–5 results in the production of deep blue colour, which exhibits absorption maximum at 620 mμ. The composition and stability of the complex responsible for the appearance of colour has been studied spectrophotometrically at different pH values. Application of JoB's methods, slope ratio method and mole ratio method indicated the formation of 1:1 complex. The stability constant (log k) at pH 2.90 and 3.92 corresponded to 4.20 and 3.90 respectively.
Databáze:	OpenAIRE
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