... and improver. Purity: 98%min. Appearance: white powder. Heavy calcium carbonate, also called ground calcium carbonate, is produced by ... , ceramics, adhesives and ink industry.Nameheavy calcium carbonateother name 1ground calcium carbonateother name 2limestone powderappearancewhite powderpurity98%minCAS NO. ... bag, or as required.Pictures: Heavy (ground) Calcium Carbonate 98%min purity white powder