Fumed Silica Aerosil 200

We are offering fumed silica aerosil 200.
hydrophilic fumed silica
a.characteristic: rnit is a white and colloidal micro-particle with its primary micro-particle from 5-40 nm and has obvious properties such as thixotropy, reinforcing, thickening and filling etc. And is rninsoluble in all kinds of solvents and liquids except hydrofluoric acid and concentrated bases.
b. Specification:qshg19-2008
item specificationrn f-100 f-150 f-200 f-300 f-380rnapperance white powderrnspecific surface area m2g 100ã�â±15 150ã�â±20 200ã�â±20 300ã�â±20 380ã�â±30rnph value 3.6ã¯â½ï¿½4.3rnloss on heating105ã¢ï¿½ï¿½ 2h% 1.0 1.0 1.0 1.0 1.0rnignition loss 1000ã¢ï¿½ï¿½% ã¢ï¿½â¤ 1.0 1.0 1.0 1.0 1.0rnapparent density gl 30-60rnsieve residue 325 mesh ã¢ï¿½â¤, %