Ca(OH)2 / Hydrated lime tanning Application : tanning ,mining , water treatment , building. Much lower cost ... caustic soda Ca(OH)2 / Hydrated lime for tanning Hydrated LimeSynonyms: calcium hydroxide,slaked lime,lime powder ,Ash Calcium PowderFeatures 1. Lower cost for water ... for 6 months. High purity (95%)Ca(OH)2 / Hydrated lime