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 WhitenessSiO2 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 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//mmºC)6.510-6 Melting point( ºC )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