UL Prospector

HN 434 Alumina Trihydrate

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HN-434 is a halogen–free, fine particle size ATH product that provides low cost flame retardant and smoke suppression in a variety of applications. The particle size distribution is specifically designed for low viscosity, high filler loading levels, and excellent processing characteristics, up to 200°C.

HN-434 is recommended for spray-up or hand-lay up FRP applications, filament winding, panel production, resin injection, foam materials, cast polymer and epoxy parts, coatings, adhesives, latex, vinyl and urethane compounds.


Huber Engineered Materials (HEM) is a world-wide driving force in industrial chemical manufacturing. They are constantly inventing and changing to surpass the client's expectations and the standards set by the industry. They are focused on the creation, development and finally the manufacturing of exceptional specialty ingredients products while maintaining exceptional technical and customer service.

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