Zinc stearate is a "zinc soap" that is widely used industrially. In this context, soap is used in its formal sense, a metal "salt" of a fatty acid. It is a white solid that repels water.
Z 1296 (OTTO) Zinc stearate, 10-12% Zn basis Cas 557-05-1 - used as a release agent for the production of many kinds of objects: rubber, polyurethane, polyester processing system, powder metallurgy.