... widely used as filler in making rubber, plastic, paper, paint, printing ink etc, it can not only be used in waking chemical ... organic synthesis, metallurgy and making glass and as best. ANOTHER CALCIUM CARBONATE FOR TOOTHPASTE, TOOTH POWDER, COSMETICS. Number ItemSpecification1caco3 content ≥ 99.0% ... 5Residue of sieve(320 mesh)<0.5%6sulfidezero7PH value9.6 CALCIUM CARBONATE FOR TOOTHPASTE/COSMETICS