... content (%)75~90%95%98%Specific gravity (g/cm2)4.0~4.154.2~4.254.3~4.4Whiteness (%)70~85 %90 ... )8.0~10.0Loose bulk density (g/cm3%)1.0~1.4Density (g/cm3%)2.1~2.7PH value 7.9~8.1 Size ... : 1) powder : 325 ,400, 1250, 2500, 3000 , 6000 mesh 2) Lump ... to dissolve, pack the rubber, plastic and oil paint S.G 4.2 barite oil drilling grade API 13