... powder widely use in high-grade paint, coating, ink, rubber, plastics, wire ,cable and so on. Mica Powder Fineness of Mica powder ... 3 ,specific gravity 2.70-3.20. mica powder have special acid-base resistance , chemical stability, also ... mica) ,secondly is phlogopite, Use 1. the superfine mica powder is the fuctional filler of plastic,coating agent, ... 0.06%Water content (H2O)0.25% High quality Mica Powder