Stearic acid is widely used in cosmetics, plastic cold-resistant plasticizers, mold release agents, stabilizers, surfactants, rubber vulcanization accelerators, water repellents, polishing agents, metal soaps, metal mineral flotation agents, softeners, and other organic chemicals. Further, stearic acid can also be used as a solvent for oil-soluble pigments, a crayon smoothing agent, a stencil polishing agent, an emulsifier of stearic acid glycerin, and the like.