Precipitated barium sulfate Properties:　White powder, insoluble in water or acid. Packaging: 25kg plastic woven bag lined with plastic bag. Storage: Stored in cool and dry place. Use: Used as plastic or filling agent of powder coating, rubber, plastic and asbestos products. Also used in the industries including ceramics, printing ink, glass, paper-making and wireless etc.. Technical index:(Q/FH) Item Index Top quality First quality Qualified products Barium sulphate % ≥ 98 98 98 pH 6.5-8.5 6.5-8.5 6.5-8.5 105°C volatile % ≤ 0.10 0.15 0.20 Hydrotrope %≤ 0.20 0.25 0.30 Iron (base on Fe) % ≤ 0.002 0.002 0.002 Fineness (325 mesh residue on sieve) % ≤ 0.10 0.20 0.20 Oil absorption % 15-18 15-18 15-18 Whiteness ≥ 95 95 94