Cabosil is a fumed silica and is used as a universal thickener for resins and liquid rubbers. It is  suited for thickening liquid materials to form a paste like or brushable consistency without the additional weight of other fillers.

SDS (Safety Data Sheet) - Click Here

Caution should be taken when using this material as it can be hazardous to breathe. We recommend using a face mask and goggles.