Barium Carbonate Free Flowing Powder Chemical formula: BaCO3 Molecular weight: 197.35 Bulk Density: 0.8-1.2 g/cm3Appearance: White Powder, Soluble in acid,Insoluble in water, Poisonous Typical Analysis: Purity 99.20% min. Moisture 0.30% max. Total Sulphur as SO4 0.30% max. HCl Insoluble Matter 0.25% max. Iron (Fe) 0.004%max. +325 Mesh 1.00% max. Average Particle Size 5 - 12 microns