
Antimony trioxide is a white crystalline powder with no smell which turns yellow when heated and white when cooled. Heating to 400℃under High vacuum situation, it can be sublimated. It is dissolved in sodium hydroxide solution, hot tartric acid solution, tartrate hydrogen salt solution and sodium sulfide solution and slightly dissolved in water, dilute nitric acid and dilute sulfuric acid. Its relative density is 5.67 and melting point is 655℃ and boiling point is 1425℃.
Product features: fineness 500 mesh, content 99.8%, the implementation of quality standard CAS1309-64-4
Purpose: Antimony trioxide is used as catalyst, mordant, fabric, paper, plastic flame retardant, glass defoaming agent. It is used for preparation of antimony tartrate, glazes, fire retardant. Manufacturing lead softener.
Antimony trioxide is the earliest flame retardant, which is suitable for epoxy resin, polyurethane, neoprene rubber, polystyrene, polyvinyl chloride, polyester and so on. when it is used alone, it has a greater flame retardant effect (except flame retardant materials containing halogen). when it has a good synergistic effect with halogen (R.HX) , its flame retardant effect is significantly improved.