Titanium trichloride, anhydrous solution

A 500-mL, single-neck, round-bottom flask equipped with a reflux condenser and magnetic stirring bar is charged with 200 mL anhydrous tetrahydrofuran and 10.0 g (65mmole) titanium trichloride. The solution is heated to reflux for 22 hours, then allowed to cool to room temperature. The resulting pale-blue crystals are collected on a medium fritted funnel and washed with 50 mL dry pentane. The pentane wash plus another 50 mL dry pentane are added to the mother liquor to give a second crop of pale-blue solids. The total yield is 21.96 g (91.4%). 

Titanium Trichloride Hexahydrate. Titanium trichloride hexahydrate [19114-57-9] can be prepared by dissolving anhydrous titanium trichloride ia water or by reduciag a solutioa of titanium tetrachloride. Evaporation and crystallisation of the solution yield violet crystals of the hexahydrate. The hydrated salt has had some commercial appHcation as a stripping or bleaching agent ia the dyeiag iadustry, particularly where chlorine must be avoided. 

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