We are offering fused silica powder is perfect for the varied applications and is made available after conducting strict tests using latest technology.the quality provided has made us a leading fused silica powder manufacturer, exporter and supplier in the industry. physical properties (typical) structure : amorphousspecific gravity : 2.2 gms/ccthermal expansion : 0.55 x 10-6/ occolor : whitemelting temperature : 1723ocapproximate bulk density : 1.2 gms/cchardness : 6 to 7 moh's.