Barium Sulfate CAS 7727-43-7 – BaSO4 Powder Product Introduction Barium sulfate, CAS No. 7727-43-7 , is an inorganic compound with the molecular formula BaSO4 . It is widely known as barite in its natural mineral form and blanc fixe when produced as a high-purity precipitated white powder. Barium sulfate is a heavy, white, odorless and chemically inert powder with high density, excellent acid/alkali resistance, low oil absorption and strong hiding power. Due to its unique