Antimony iodide

Both antimony tribromide and antimony ttiiodide are prepared by reaction of the elements. Their chemistry is similar to that of SbCl in that they readily hydroly2e, form complex haUde ions, and form a wide variety of adducts with ethers, aldehydes, mercaptans, etc. They are soluble in carbon disulfide, acetone, and chloroform. There has been considerable interest in the compounds antimony bromide sulfide [14794-85-5] antimony iodide sulfide [13868-38-1] ISSb, and antimony iodide selenide [15513-79-8] with respect to their soHd-state properties, ferroelectricity, pyroelectricity, photoconduction, and dielectric polarization. 

Antimony iodide selenide, 3 63 Antimony iodide sulfide, 3 63 AntimonyCIII) nitrate, 3 65 Antimony oxide... 

While many studies have been carried out aimed at the feedstock recycling of rubber wastes by pyrolysis and hydrogenation processes (see Chapters 5 and 7), little information is found on the catalytic cracking and reforming of rubber alone. Larsen35 has disclosed that waste rubber, such as used tyres, can be degraded in the presence of molten salt catalysts with properties as Lewis acids, such as zinc chloride, tin chloride and antimony iodide. The decomposition proceeds at temperatures between 380 and 500 °C to yield gases, oil and a residue, in proportions similar to those obtained by simple thermal decomposition. 

Antimony compounds are based on antimony, an element that exhibits both metal and nonmetal properties. Many of its compounds are toxic and corrosive, particularly the soluble salts. They include antimony iodide and antimony perchloride. Some antimony compounds decompose in water to produce toxic gases e.g., antimony sulphate decomposes to sulphur dioxide while antimony bromide produces bromine gas. 

Antimony iodide, which exists in aqueous solution as H[SbIJ, can be extracted with benzene. When the colorless benzene solution comes in contact with an aqueous solution of Rhodamine B, a violet-red color appears. This is probably due to an addition compound of Sblg and Rhodamine B. It is claimed that this reaction is specific for the detection of small amounts of antimony. 

The benzene layer then contains antimony iodide, which after subsequent treatment with ammonia is converted into the indifferent antimony hydroxide. The excess of iodine can be eliminated by treating the fleck with sodium sulfite. 

With antimony trichlonde the analysis gave Sb= 121-86, while with antimony trilromide Sb = 119-882, and antimony iodide Sb = 119-86. 

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