... ~8mm 3.Usage:fireproof,heat insulation,agriculture,friction 4.Color:golden Packaging & Delivery1. Packaging Detail : 25kg/bag or as customer ... .3~8mm3.Usage:fireproof,heat insulation,agriculture,friction 4.Color:golden Molecular formulaSiO2MgOAL203Fe2OSFeOK2OH2OCaOPHNameSilicon dioxideMagnesium OxideAluminium TrioxideIron trioxdeIronOxidePotassiumOxideHydrogen oxideCalcium oxidePHContent (%)37-4211 ...