Physical and chemical properties of barium sulfate: barium sulfate is a white or off-white crystalline powder. It is an important barium-containing mineral with strong chemical inertness, good stability, acid and alkali resistance, high density, moderate hardness, high specific gravity and high whiteness. , can absorb harmful rays (X-rays and Y-rays) and other advantages. It has the luster of glass, non-magnetic and non-toxic. And materials with environmental protection functions are widely used in various coatings, medium and high-grade inks, rubber, papermaking, ceramics, cosmetics and other fields. Refined barium sulfate is also used in medium and high-grade paints, engineering plastics (household appliances, building materials plastics), high-grade insulating rubber, rubber products, cathode expansion rods of batteries, and glaze materials for ceramics and enamels.