Titanium Silicide

Possibly the silicide Ti₂Si exists as well as the disilicide TiSi₂. The latter has been prepared by igniting in a crucible a mixture of 200 grams of aluminium powder, 250 grams of sulphur, 180 grams of fine sand, and 15 grams of titanic acid or 4 grams of potassium titanifluoride, the whole being covered with a layer of magnesium powder.

Titanium silicide, TiSi₂, consists of small grey, tetragonal pyramids of density 4.02 and hardness 4.5 on Moh's scale; it is insoluble in mineral acids, except hydrofluoric acid, but dissolves slowly in 10 per cent, potassium hydroxide solution.