Antimony Trioxide in Powder Form works as flame retardant for plastics and rubber, laminates, insulation, paints and varnishes, paper and textiles, in combination with a halogen source. Antimony Trioxide is also used as opacifying agent for enamels and ceramic pigments, paints and printing inks. Antimony Trioxide is available in powder form. Antimony Trioxide in Powder Form is offered in fine particle size range which offers a good reactivity in the preparation of antimony-based pigments.