Aluminium Hydroxide – HydrAl

Hydral products belong to the range of dried and ground aluminium trihydrates (ATH) with an average particle size in the range of 7 – 100µm. Aluminium trihydrate (ATH) has the chemical formula Al₂O₃x3H₂O, so when heated above 200°C, it releases two molecules of water, turning into aluminium monohydrate, and with further heating above 300°C, third water molecule is released and material is transformed into anhydrous aluminium oxide, Al₂O₃. This irreversible, endothermic process makes Aluminium Trihydrate an effective flame retardant and smoke suppression agent. This material is non-toxic, chemically inert and has low abrasiveness. Hydral products have low surface moisture content, below 0,5%.

The application of these materials is very wide, and most often dried and ground hydrates are used in paper production, production of ceramic, composite, thermoplastic, rubber, sanitary and building materials. Furthermore, these types of hydrates are used in the glass industry, in the production of carpets and waterproof fabrics, in the production of titanium dioxide, and as fillers and flame-retardants, as well as in the production of various types of coatings, paints and varnishes.