Ultra-Violet Absorption Spectra of Cyanogen and the Cyanogen Halides

Abstract

We have photographed the absorption spectra of cyanogen chloride, bromide, and iodide, and cyanogen itself in the gaseous state. The light source was a water-cooled quartz hydrogen tube consuming 0.5 amp. at 10,000 volts, from which the emission was perfectly continuous up to the short wave-length limit of the spectrograph (1840 A.).