The barium sulphate have the fine chemical stability and weatherability. Fine covering strenuously, keep the true color. The barium sulphate used for plastic, ceramic, rubber, powder coatings, etc. HB-1: density:4.25-4.35,DV50:9-11um, oil absorption:9%,PH:8-10,BaSO4:95%,Fe2O3:0.04%, CaO:0.4%,Al2O3:0.01%,heavy metal:0.01%,moisture:0.2%,L.O.I:0.8%,whiteness:92%.For more information, please contact ...