The treatment of water-reactive solid waste chemicals which generate corrosive products poses unique problems of feeding and reactor design. These problems have been addressed on a bench-scale and the design of a unit suitable for hazardous waste has been developed. The water-reactive material used was powdered titanium trichloride which was reacted with water (and oxygen) to give titanium dioxide and hydrochloric acid. The acid was neutralized by an alkaline scrubbing media.