Calcium iodide

The reaction of calcium iodide and strontium iodide and the ion in tetrahydrofuran (THF) followed by treatment with acetonitrile... 

When treated with aluminum bromide at 100°C, carbon tetrachloride is converted to carbon tetrabromide [558-13-4], reaction with calcium iodide, Cal2, at 75°C gives carbon tetraiodide [507-25-5]. With concentrated hydroiodic acid at 130°C, iodoform [75-47-8], CHI, is produced. Carbon tetrachloride is unaffected by gaseous fluorine at ordinary temperatures. Replacement of its chlorine by fluorine is brought about by reaction with hydrogen fluoride at a... 

Calcium iodide (xHiO) [71626-98-7 xHiO) 10102-68-8 (anhydr)] M 293.9 (for 4H2O), m 740°, b 1100°. Dissolved in acetone, which was then diluted and evaporated. This drying process was repeated twice, then the Cal2 was crystd from acetone-diethyl ether and stored over P2O5. Very hygroscopic when anhydrous and is light sensitive [Cremlyn et al. J Chem Soc 528 1958]. Hexahydrate has m 42°. 

Fluorine decomposes calcium iodide, lead iodide, mercury iodide and potassium iodide at ambient temperature, and the liberated iodine ignites, evolving much heat. 

Vanadium metal is prepared from pentoxide, V2O5, by reduction with calcium at elevated temperatures. Presence of iodine lowers calcium reduction temperature to 425°C because of heat of formation of calcium iodide. Pentoxide also may be converted to the trichloride, VCI3, and the trichloride reduced with magnesium metal or magnesium-sodium mixture at high temperatures to form high purity ductile metal. Alternatively, a fused mixture of vanadium chloride, sodium chloride, and hthium chloride may be electrolyzed to produce the metal in high purity. 

Calcium iodide anhydrous, USE calcium iodide solution 27% w/w 111.11... 

Add calcium iodide to the tank with good mixing. Add and dissolve ascorbic acid and sugar. 

Calcium Iodide. CAS 10102-68-81. Cal , yellowish-white solid, solubility 66g/l00g H <) at 10 C, formed by reaction of calcium carbonate or hydroxide and hydriodic acid. The hcxahydraie. CaJj- 6H2O. is soluble 10 the extent of 1.680 g/100 g HrO at 30 C. 

The production of vanadium metal essentially is the calcium reduction ot vanadium pcntcixide in Ihc presence of iodine and is known its the McKechiiie-Seyboll process. The reaction is earned out in a steel bomb at about 7(K) C. The end products are vanadium metal, lime, and calcium iodide. A similar iodide process also is used in the production of high-purily zirconium. 

Calcium bromide (CaBr2) and calcium iodide (Cal2) have properties similar to those of calcium chloride (CaCl2). They are prepared by the action of the halogen acids (HX) on calcium oxide or calcium carbonate. 

Calcium bromide and calcium iodide are sold as hexahydrates for use in medicine and photography. Calcium fluoride (CaF2) occurs naturally as fluorspar. 

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