CAS No.: 7727-43-7
Hazard Class: Non-hazardous
UN No.: Non-regulated
Appearance: White fine powder
Description: Barium sulfate is obtained from purified barite ore or synthesized via precipitation, functioning as an inert, high-density (4.5 g/cm³) material with exceptional X-ray opacity and chemical stability. Its primary applications include medical contrast imaging (99.97% purity for USP grade), oil/gas drilling muds (API 13A standard), plastics/rubber filler (improves density and acid resistance), and coatings (replacement for lead-based pigments). The ultra-low solubility (0.0025g/L at 25°C) ensures safety in biomedical uses while providing permanent whiteness in industrial formulations.