Chem. [f. Gr. εὐ- (see EU-) + χλωρός green + -INE. Formed by Davy on the analogy of CHLORINE, a word introduced by himself a few months earlier.] ‘A gaseous mixture of chlorine and oxide of chlorine, obtained by the action of hydrochloric acid on chlorate of potassium’ (Watts, Dict. Chem.).
1812. Sir H. Davy, Chem. Philos., 238. I discovered this elastic substance in its pure form in January 1811, and gave to it the name of Euchlorine [note, Ευ and χλωρος] from its bright yellow-green colour.
1823. Faraday, Exp. Res., xxi. 92. Fluid euchlorine was obtained by enclosing chlorate of potash and sulphuric acid in a tube.
1873. Watts, Fownes’ Chem., 186. The euchlorine of Davy, prepared by gently heating potassium chlorate with dilute hydrochloric acid.
