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.

Grade BET surface area
[m2/g]
Loss on drying
[%]
pH value Carbon content
[%]
Surface modification
XYSIL® R120H 120 ± 20 ≤ 0.5 4.5-6.5 3.5-5.5 PDMS
XYSIL® R120B 120 ± 20 ≤ 0.7 3.7-4.5 0.6-1.2 DDS
XYSIL® R170H 170 ± 20 ≤ 0.7 3.7-4.5 0.7-1.5 DDS
XYSIL® R230 260 ± 20 ≤ 0.5 5.5-8.0 2.5-4.0 HMDS

TDS & MSDS DOWNLOAD

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