Thallous iodide

Thallous iodide [7790-30-9J M 331.3, m 441.8°, b 824 , d 7.1. Refluxed for 2-3h with water containing HI, then washed until acid-free, and dried at 120°. Stored in brown bottles. POISONOUS. 

Thallo-. thallous, thalhum(I). -bromid, a, thallous bromide, thalliuro(I) bromide -chlorat, n. thallous chlorate, thallium(I) chlorate, -chlorid, n. thallous chloride, thallium I) chloride, -fluorid, n. thallous fiuoride. thal lium(I) fiuoride. -ion, n- thallous ion, thal lium(I) ion. -jodat, n. thallous iodate. thal liura(I) iodate. -jodid, n. thallous iodide. thallium(I) iodide, -salz, n. thallous salt. thallium(I) salt, -sulfat, n. thallous aulfate. thailium(I) sulfate, -verbindung, /. thallous compound, thallium(I) compound. 

The thallous derivative so formed was found to undergo metathesis with methyl iodide and to yield thallous iodide and methyl cellulose. Analyses of the latter product for methoxyl content after suitable purification yielded a measure of the accessible hydroxyl groups. The reactions were all conducted in non-aqueous systems. 

A range of scintillants is available, many designed for maximum efficiency with specific isotopes. Crystals of sodium iodide containing a small amount of thallous iodide are very efficient detectors of gamma radiation and... 

H. P. Cady and R. Taft sought if electrolytic oxidations can occur in systems containing no oxygen, and found that with liquid ammonia as solvent, thallous iodide, cuprous iodide, hydrazobenzene, and methyl- and ethylamine hydrochlorides can be oxidized. The properties of soln. of salts, etc., in liquid ammonia were studied by F. W. Bergstrom, T. J. Webb, E. C. Franklin and C. A. Kraus, etc. 

All four trihalides of each element are known, with one exception. The compound T1I3, obtained by adding iodine to thallous iodide, is not thallium(III) iodide, but rather thallium(I) triiodide [Tl1 )]. This situation may be compared with the nonexistence of iodides of other oxidizing cations such as Cu2+. 

Another commonly used detector is the scintillation detector. This makes use of a crystal that produces a scintillation (pulse of visible light) upon absorption of an x-ray photon. The visible light is detected by a photomultiplier tube and associated amplifier circuit, which is sensitive enough to detect nearly every scintillation. The scintillating crystal is usually sodium iodide doped with an activator such as thallous iodide. 

Sol in KI soln practically insol in water insol in ale. IDLH 15 mg/m (as Tl). SYNS THAUJUM(I) IODIDE THALLIUM(1+) IODIDE THALUUM MONOIODIDE THALLOUS IODIDE... 

If the thallium dipiieiiyl cliloride be replaced by thallium diethyl bromide, only thallous iodide is isolated from the reaction. It has been pointed out that thallium dialkyJ halides when treated with moist silver oxide yield the corresponding hydroxides, and that the latter with acids give salts. In the aromatic series, it is found that the best method of preparing the salts is to boil together a mixture of the halide, silver oxide, and the organic acid in toluene. Alcoholic potassium hydroxide transforms the halides to oxides, and these are also available for production of salts. 

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