Azub AT-65 Antimony trioxide 1309-64-4 Great Lakes Flame and Smoke Retardants >> Antimony oxide ADHESIVE SEALANT AZUB™ AT-65 Antimony Trioxide Colloidal Dispersion AZUB AT-65 is a 65% active colloidal dispersion of submicron particle-sized antimony trioxide in water. AZUB AT-65 is primarily used for applications where water as a carrier and fineness of particle size are advantageous, such as textile backcoatings, paints, coatings, adhesives & mastics. Colloidal dispersion of submicron particle-sized antimony trioxide in water. Used as a flame retardant in adhesives and mastics.