325mesh Average particle size:40f+0.5um Moisture:Max0.2% #400 sieve reside:1%max Whiteness:93min Oil absorption:14-18% Soluble in water:0.2%max Ph value:7.5-9.5 Baso4 purity:97%min Hcl insoluble matter:96.5%min True specific gravity:4.3g/cm3 25 kgs/bag
