Nile blue and brilliant cresyl blue as redox indicators in iron(II) titrations.
Nile Blue and Brilliant Cresyl Blue, two compounds related to diaminophenoxazine, have been studied as indicators in titrations of iron(II) with cerium(IV)(in hydrochloric, sulphuric and perchloric acid media), dichromate, vanadate and permanganate. They are particularly suited for titrations in a fairly concentrated sulphuric acid medium and for titrations with dilute solutions. A probable indicator mechanism is suggested.
Sriramam
K
K
Department of Chemistry Andhra University Postgraduate Centre Guntur 522005, Andhra Pradesh, India.