... in ceramic tile ,glaze,tableware zirconium silicate whiteness is 92%min ♥zirconium silicate is non-toxic, tasteless, white or offwhite powder ... agent, stabilizing agent of ceramic glaze. ♥zirconium silicate specification :ZrO2 64%minFe2O3 0.12%max TiO2 0.10%max Partical size ...