Hydrophobic Fumed Silica

XYSIL® hydrophobic fumed silica is based on hydrophilic fumed silica powder products after-treated with HMDS (hexamethyldisilazane) and DDS (Dimethyldichlorosilane) based superficial treatment, or structure modified.

GradeBET surface area
Loss on drying
pH valueCarbon content
Surface modification
XYSIL® R120H120 ± 20≤ 0.54.5-6.53.5-5.5PDMS
XYSIL® R120B120 ± 20≤ 0.73.7-4.50.6-1.2DDS
XYSIL® R170H170 ± 20≤ 0.73.7-4.50.7-1.5DDS
XYSIL® R170B170 ± 20≤ 0.95.0-8.02.0-4.0HMDS
XYSIL® R230260 ± 20≤ 0.55.5-8.02.5-4.0HMDS


Besides, you can get more information about fumed silica in the service center, Service Center; if there is any documents unavailable, please contact us

Fumed Silica Gallery

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