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mercury 1 iodide is a yellow to greenish powder that darkens in air and is decomposed upon exposure to light into mercury and mercuric iodide. It is insoluble in water but readily soluble in alcohol, ether, acetone, chloroform, ethyl acetate and olive oil. It is a sensitive reagent and should be handled under dry conditions. It is used for the preparation of Nessler’s reagent and has been formerly employed as a treatment for syphilis. It is also a component of some X-ray and gamma ray detection and imaging devices operating at room temperatures. It is a common ingredient in blister ointments for treatment of exostoses, bursal enlargement and other ailments in veterinary medicine.
At elevated temperatures the crystal structure of mercury iodide is quite complex and several structural phases have been reported. The most stable under ambient conditions is the non-superionic b phase, Ag2HgI4, with an ideal face centered cubic (f.c.c.) arrangement of the iodine atoms and a cubic space group I4-m (see Ref. [1]). In the superionic a phase, which is a compound of mercury and iodine, the iodine sublattice has an distorted body centered cubic (bcc) structure with disordered over half of the tetrahedrally co-ordinated sites.
Mercury iodide is found as free mercury and in the cinnabar, corderoite and livingstonite minerals. mercury 1 iodide is also produced commercially by the electrolytic reduction of metallic mercury with iodine in the presence of copper(II) sulfate. American Elements offers high purity, submicron and nanopowder forms of this material for a wide variety of applications as well as standard, research and technical grade materials. Please request a quote for additional details.