... ,mining , water treatment , building. Much lower cost than caustic soda Ca(OH)2 / Hydrated lime for tanning Hydrated LimeSynonyms: calcium hydroxide ... StandardQB1001-2011 ItemIndexHigh purity Refined Appearancewhite or grey white powder Ca(OH)2(%) ≥9085Mesh 200-400100-200Hydrochloric acid insoluble % ≤0.71 ... ,it will keep good for 6 months. High purity (95%)Ca(OH)2 / Hydrated lime