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Barium sulfate is a kind of odorless and flavorless orthorhombic crystal in white color. Its molecular formula is BaSO4. The density is 4.25-4.5, and the decomposition temperature is above 1600℃. Barium sulfate is soluble in hot concentrated sulfuric acid, and it is almost insoluble in water, dilute acid, and alcohol. Its water suspension solution presents neutral in litmus paper test. Barium sulfate can be used as the filler of white pigment, paper and rubber. Besides, it is also used as a medicine in Gastrointestinal Fluoroscopy.
（1）Barium sulfate can be used as the intensified modification filler in chemistry industries, such as rubber, plastics, oil paint and coating , etc.
（2）In ceramic industry, barium sulfate is used to produce high-frequency porcelain, radio ceramic, various industrial ceramics, architectural ceramics, domestic ceramics, ceramic glaze and so on.
（3）In cosmetics industry, barium sulfate is applied as high-quality filler.
（4）In medicine and food industry, barium sulfate is used as additives.
（5）In paper-making industry, it is used to produce varied paper products.
（6）In high-tech industry, it is used in the electronic field.
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