... crystal or amorphous powder,non-toxic, tasteless.The relative density of light magnesium carbonate is small, ... and high temperature resistance. Asbestos light Magnesium Carbonate is an excellent insulating material. It can ... Medical supplies. Food-grade light magnesium carbonate can produce flour additives, dryer, color fixative, carrier, anti-caking agent. (Food grade) Magnesium Carbonate powder