Soapstone (Talc) Powder Technical Specifications: -Brightness: From 80% to 96% ISO -Particle Size: 250 mesh to 700 mesh, 100% passing -% of Calcium Carbonate: Less than 0.5% -Ferrous Oxide: Traces In 50 Kgs PP/HDPE bags or 1 MT Jumbo bags. Paper packing of 25 Kgs also available.