Chlorine solutions in molten alkali chlorides

Abstract

Electronic absorption spectra of gaseous chlorine and their saturated solutions in molten alkali chlorides were studied in wide ranges of temperature and wavelength. It was found that gaseous chlorine has a wide absorption band between 20 000 and 43 500 cm-1. There is a tendency to both widening of the band and shifting of the absorption maximum to the short-waves region with rising temperature. The absorption bands of saturated solutions of chlorine in all molten alkali chlorides show a maximum in the neighborhood of 30 000 cm-1. A good correlation was found between the optical density of molten Salt-Cl2 systems and the solubility of chlorine. © 2007 Verlag der Zeitschrift für Naturforschung.