Cyclopentane-1,3-dione Bis (4-Methylthiosemicarbazone) Monohydrochloride as a Spectrophotometric Reagent for the Determination of Bromate in Perchloric Acid Medium

Abstract

Cyclopentane-1,3-dione bis (4-methylthiosemicarbazone) monohydrochloride produces coloured solutions with bromate ions in perchloric acid medium. The yellow colour obtained (molar absorptivity 1.8×10⁴ 1.mol^?1.cm^?1 at a wavelength of 400 mm) has been used for the spectrophotometric determination of trace amounts of bromate.