Precipitated barium sulfate is an amorphous white powder, slightly soluble in water and insoluble in acid. The solubility in water is only 0.0024g/100g water. It is soluble in hot concentrated sulfuric acid. Gucheng-branded precipitated barium sulfate has the advantages of strong chemical inertness, good stability, acid resistance, alkali resistance, moderate hardness, high specific gravity, good whiteness, etc.