... 400,800,1000mesh 2. shape: powder 3. color: black 4. usage: rubber,coating,paint,decorate Packaging & Delivery:1 ... biotite powder black powder size:20~100,325,400,800,1000mesh usage: rubber,coating,paint,decorate ... ContentIron contentOil AbsorptionL.O.I.DensityMoistureWhitenessMelting Point< 1%100-400 ppm28-50%4.97%0.28-0.33ml ... /g <1% 55-75%1,280 degree3. Particle Standard ...