Tricalcium phosphate is produced commercially by treating hydroxyapatite with phosphoric acid and slaked lime. It is made by treating slaked lime with concentrated sodium hydroxide solution. Calcium hydroxide (traditionally called slaked lime) is an inorganic compound with the chemical formula Ca(OH). It is a mixture of betel nuts, tobacco, paraffin wax, catechu, and slaked lime. Lime wash is pure slaked lime in water. Mixtures of bluestone crystals, sulphate of ammonia, slaked lime and carbon black were used. The burnt shell can then be slaked and turned into lime putty. Sometimes, baking soda or slaked lime is also added. Other ingredients include Ghee, and slaked lime. Naswar&colon; tobacco, slaked lime, indigo, cardamom, oil, menthol, water. In ancient "cortijos", mud or slaked lime were used as mortar. Slaked lime (chuna) paste is commonly added to bind the leaves. Slaked lime (calcium hydroxide) can be formed by mixing quicklime with water.