Some observations on the redox behaviour of N-phenylanthranilic acid indicator in iron(II) titrations.
The optimum conditions for the successful use of N-phenylanthranilic acid as indicator in titrations of iron(II) with dichromate, cerium(IV) sulphate and vanadate have been established. The influence of iron(III) on the indicator action, and the nature of a green compound formed from the indicator in iron(II) titrations, have been investigated spectrophotometrically.
Sriramam
K
K
Department of Chemistry, Andhra University Postgraduate Centre, Guntur-5 (A.P.), India.