Titanium Monosulphide, TiS

Titanium Monosulphide, TiS, is formed by the reduction of the sesqui- or di-sulphide in a current of hydrogen. The reaction takes place at the softening temperature of glass; and the monosulphide is a reddish, lustrous, metallic-looking solid, resembling bismuth. It is stable in the air at ordinary temperature, but burns when heated, forming titanic oxide. It is unattacked by dilute hydrochloric and sulphuric acids, slowly oxidised by nitric acid and aqua regia, and dissolved by concentrated sulphuric acid.