CAS No.: 7631-86-9 Appearance: Fine White Powder/Granular Specification SiO2 %-------------------------------------------90min Evaporation loss % 105, 2h-----------------------------------4.0-8.0 Ignition loss%1000, 2h---------------------------------------3.0-6.0 PH value----------------------------------------------------6.5-7.5 Bet specific area m2/g -------------------------------------200-260 Dbp absorption cm3/g----------------------------------------2.8-3.5 Total Fe mg/kg---------------------------------------------500max Packaging details: 25kg/bag Customized is also achieved. Application: Silicon Rubber: Improves silicon rubbers durability, rebound rate, and anti-distortion performance. Plastics Industry: Improves plastics tenacity, strength and prevents water absorption.