Average particle size(nm) 40-60 Specific surface area(m2/g) 28 Breathability specific surface area 8 Water% 0.4 Whiteness% 95.5 DOP Oil absorption 38 325um passing rate% 100 CaCo3% 95 Fe2O3% 0.01 Activation grade% 99 MgO% 0.8 Burning weightlessness% 43.6 Hydrochloric acid insolube content% 0.3 PH 9.55 CCR900 special for Sealants and Adhesives.