PURPOSE: To provide the titled compsn. which does not damage light parts, has no fear of staining, and is suitable for the lubrication of sewing machines, business and office machines, etc., consisting of fine powders of melamine cyanurate, low- molecular polytetrafluoroethylene, portlandite, and zinc oxide.

CONSTITUTION: A white solid lubricant compsn. consists of powders of 1pt.wt. melamine cyanurate, 0.5W1pts.wt. low-molecular polytetrafluoroethylene, 0.3W 0.5pts.wt. portlandite, and 0.3W0.5pts.wt. zinc oxide, each of said powders having a particle size of 3μmor smaller. When said compsn. is added to a grease or lubricating oil, resistance to wear and seizing is improved. Since the compsn. is light, it does not damage parts made form light materials. Since the compsn. is white, there is no fear of staining cloth or yarn, and the compsn. is suitable for the lubrication of sewing machines, business and office machines, and other various machines.