Calcium Stearate through Precipitation process is also known as purified, refined or synthetic calcium carbonate. It is non-toxic product and as along as it meets certain purity requirements it can be used in paper products that come in contact with food. Calcium Stearate is generally made from a high purity calcium carbonate rock called limestone. Calcium Stearate through Precipitation process, products can be made with very small sizes, with high surface areas, high oil absorptions, and/or with different powder bulk densities.
Calcium stearate is a white waxy powder. It is produced by heating stearic acid and calcium oxide. It is an insoluble salt of calcium, steatic acid and palmatic acid. It is insoluble in water ether, acetone and cold alcohol. Calcium stearate is used as a drying lubricants and dusting agents for rubber.
Pencil And Crayons:-
Calcium stearate is used in place of sodium & potassium in soaps because it is insoluble in water and does not lather well.