... particles, narrow particle size dispersion, high chemical stability. Barium sulfate content of 98%, and its high whiteness, no black sports, no impurities ... -white ultra-fine precipitated barium sulfate production using leading technology, its whiteness and barium sulfate content above 98%,high purity, free of impurities ... .7Water%≤0.18Standard (Q/TNRC 1-2009) CUOMEI natural barium sulfate baso4 98%