Baltimore Innovations has expanded its range of rheological additives with the launch of its Supasil range of fumed silica powders designed to thicken products which have low viscosity. They can also be used as anti-caking and anti-sagging agents as well, the company says. Supasil powders are white, non-toxic particles of micronized silica. Their size is tightly controlled and can be produced in grades from seven to 40 nanometers wide, which in turn have specific surface areas between 70 - 400 m²/g. These new powders offer high transparency and in addition to use in the coatings, inks and adhesives industries, they can be used in the rubber, sealants and color concentrate sectors.