Ultra Super Fine Grade of Quartz Silica Powder of High Purity inherently Inert, White Bright White Powder Form having Uniform Particle Size . 1. CHEMICAL SPECIFICATIONS 1. SiO2 : 99.00 ++ Minimum 2. Fe2O3 : 0.08% 3. Al2O3 : 0.01% 4. CaO : 0.02% 5. MgO : NIL 6. L.O.I. : 0.16 at 900* for 45 minutes 7. Oil Absorption : 27 ml/100gm to 35 ml/100gm 8. Water Absorption : 35 ml/100 gm 9. Bulk Density : 0.65 gm/cc Tapped 10. Brightness : 90% ++ minimum 2. PARTICLE SIZE ANALYSIS [MALVERN] 1. D - 50 : 3.00 microns 2. D - 90 : 6.99 microns 3. D - 97 : 9.59 microns 4. D - 98 : 10.40 microns 3. Refractive Index : 1.55 4. Specific Gravity : 2.56 5. Yellowness Index : 1.6 6. Reflectance : 94.50% 7. pH of 10% : 8 8. Hardness : 7 mohs 9. Melting Point : 1600*c 10. Boiling Point : 2230*c