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 1540C -- 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 WhitenessSiO2CaO,Al2O3,Fe2O3,TiO2MgOS >80,50-53,43-46,0.3max,0.3max,0.02max,2.5max,0.02 Max , The physical properties of wollastonite ItermResult Particle Size(mesh)0-3mm, 200mesh,325mesh, 400mesh Specific Gravity2.9 absorption oil value,(g/100g)20-26 Whiteness(%)>80 Refraction(%)1.63 PH9.9 Expantion coefficient(mm//mm,C)6.5,?10-6 Melting point(,,C,)1540 Hardness(Moh's)4.5 Loss on ignition2.5 Max ,PACKING AND STORAGE 50KG or 25 KG per woven plastic bag or 1 ton jumbo bag