... regions,such as Poland,Italy,Belgium,Turkey and so on. silica powderSpecification ItemValueAppearanceWhite powderLoss on drying 105 2h %4.08.0Ignition ... value cm3/g2.003.50SiO2 %≥90Na2SO4 %≤1.50General description: Precipitated silica with special physic-chemical properties, work as reinforcing transparent fillers ... . TEL:+86 411 82507336,82507337,82507338 FAX:+86 411 82507318 silica powder