... 2008 Certified company 2) Purity: 94%min 3)400mesh, 800mesh, 1250mesh 4)Calcium Carbonate Calcium carbonate (limestone)is used in injection mould, extrusion & ... ,polyethylene(PE),polypropylene(PP),ABS,Building material,etc. SpecificationCaCO3 content (Dry basis),% ≥ 96PH(10% Soliquit) 8-9 ... oil Number (DOP)ml/100g ≤ 30Activation% ≥ 99Appearance POWDER Calcium Carbonate-Various Grades (H.S 28365000)