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Antimony trioxide, antimony oxide

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Trioxide of antimony represents powder or crystals of a white, not soluble in water.
Density: α (valentinit, a rhombic singoniya) - 5,19 g/cm ³, β (senarmontit, a cubic singoniya) - 5,67 g/cm ³. Melting temperature - 655 °C, Boiling temperature - 1456 °C.

In the nature meets in the form of minerals of a valentinit and a senarmontit.
In the industrial way technical trioxide of antimony is received on converter technology which cornerstone use of exothermicity of oxidizing reaction of antimony is. In the course of sublimation trioxide of antimony is caught in bag hoses and goes on control having sunk.

Chemical formula: Sb2O3


Scopes:
Trioxide of antimony is applied mainly as a pigment to paints, the muffler to enamel, pickle in the textile industry. Also trioxide of antimony is used as the catalyst by production of PETF (polyethyleneterephthalate), as flocculant by production of a titanium dioxide and paints.
It is widely used as fire-retarding agent for such plastic as polyvinylchloride, polypropylene, polyethylene, polystyrene, polyurethane, different styrene plastics, has high coefficient of an antiflyaming, exerts small impact on a mechanical haraktetistika of the main material. It is applied by production of fire-prevention overalls and gloves, the external body of fireproof electric equipment, the fireproof car, fireproof wires and cables, etc.
In the industrial rubber industry it is used as a filler and fire-retarding agent for RTI.
In the electroindustry it is used for production of non-magnetic porcelain.
In the glass industry trioxide of antimony is used as the clarifying agent instead of arsenic.
Trioxide of antimony is used as synergist in mix with galogensoderzhashchy fire-retarding agents forming halogenides and xyhalogenides of antimony which, igniting, pass into a gaseous state and dilute combustible gases.

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