pre-cipitated barium sulfate;barium sulfate

Molecular formula : BaSO4  

nature : also known as the precipitation of barium sulfate (pre-cipitated Jaime Sulfate). White oblique side crystallization or white amorphous powder. 4.50g/cm3 density. 1580 ° C melting point. Soluble in hot concentrated sulfuric acid. Almost do not dissolve in water, ethanol and acid. In 1149 ° Cinto monoclinic crystal. When dry easily caking. By curing barium solution and accession to remove calcium, magnesium mirabilite after the mixed solution, in 90 ° C reaction, precipitation generated by leaching, washed and acid, pH 5 to 6, then filtration, drying, crushing obtained. Huang barium can also be used with mirabilite brine solution prepared by the reaction. As used in the manufacture of paper and coated paper coating on the surface, the textile industry of sizing agent, glass products for the clarification, paint, ink, plastics, rubber filler, radiation protection and wall material used for ceramic, enamel, paint, colored paper and wallpaper filler. Medical contrast agent for the digestive system.