Hydrophobic fumed silica is made to disperse in solvent-based systems. This fumed silica can be used in many resin systems, adhesives and coatings. The specific surface area of this fumed silica is 130 m2/g. A 4%slurry of hydrophilic fumed silica has a ph value of 4.5-5.5. The refractive index is 1.456 with a transparency factor of 0.20. For weight to volume reference, 2 oz. = quart container, 4 oz. = ½ gallon container, 8 oz. = one gallon container, and a 1 kg container is the size of a box that measures 10 " x 10 " x 10 ".