... clay/calcined kaolin specifications: High-whiteness:93.5% min Particle size(-2um,%):80-84 Good extender of TiO2 china clay/ ... HS-801A calcined kaolin giving very high opacity, high whiteness, fine particle, good dispersion, little residue on 325 mesh sieve,Super whiteness ... 100g)55-65PH6.0-8.0Water content (%)≤1.0 Average particle size(μm)≤0.9Refractivity1.62Dispersion (μm)≤45[Chemical specification] ...