Mg(C18H35O2)2 , MW = 591.27 g/mol , CAS no. = 557-04-0. It is a soap consisting of salt having the anion of stearic acid magnesium cation (Mg2+). Eklub MgS is a white, water-insoluble powder.

It provides lubricating properties, preventing ingredients from sticking to manufacturing equipment during the compression of chemical powders into solid tabletsstearate is often used as an anti-adherent in the manufacture of medical tablets, capsules and powders. It can also be used efficiently in dry coating processes. In PVC application it gives shining and lubrication