Our advantage: 1. Factory price, 2. Good Quality, 3. Free sample, 4. A long stable supplier, 5. Good support to you `````````````````````````````````````````````````````````````````````````````````````````````````` Wollastonite Features: -- White powder nd relative density is 2.8,melting point is 1540°C -- Good insulation performance, endure acid, resist abrade, bear high temperature. USAGE: -- -- Be widely used in paint, plastics, rubber, electric welding, glass, electron industry, metallurgy and paper making. Chemical analysis Whiteness SiO2 CaO Al2O3 Fe2O3 TiO2 MgO S >80 50-53 43-46 0.3max 0.3max 0.02max 2.5max 0.02 Max The physical properties of wollastonite Iterm Result Particle Size(mesh) 0-3mm, 200mesh,325mesh, 400mesh Specific Gravity 2.9 absorption oil value (g/100g) 20-26 Whiteness(%) >80 Refraction(%) 1.63 PH 9.9 Expantion coefficient(mm//mmºC) 6.5Ã?10-6 Melting point( ºC ) 1540 Hardness(Moh's) 4.5 Loss on ignition 2.5 Max PACKING AND STORAGE 50KG or 25 KG per woven plastic bag or 1 ton jumbo bag