Precipitated Barium Sulfate

We are offering precipitated barium sulfate 325mesh. Specifications: 1) average particle size: 40±0.5μm 2) moisture: max. 0.2% 3) #325 sieve reside: 0.5% max. 4) whiteness: 95 min. 5) oil absorption: 14 - 17% 6) soluble in water: 0.2% max. 7) ph value: 7.5 - 9.5 8) baso4 purity: 98% min. 9) hcl insoluble matter: 98.6% min.