HN-532 by Huber Engineered Materials is alumina trihydrate. Acts as a flame retardant. It is halogen–free and has very fine particle size. The particle size distribution is specifically designed for low viscosity, high filler loading levels, and excellent processing characteristics, up to 200°C. HN-532 is suitable for use in resin injection, foam materials, add cast polyester and epoxy parts, latex, vinyl and urethane.