1, physical and chemical properties:

1.1 molecular formula: BaSO4

1.2 molecular weight: 233.39

1.3 melting point: melting point (℃): 1580℃

1.4 relative density (water = 1) : 4.50(15℃)

1.5 nature: White oblique side crystallization or white amorphous powder, Insoluble in Water, acide, alkali and organic solvent.