By the early 1890s, the Pinkerton National Detective Agency employed more agents than there were members of the United States Army.
Iodine monochloride is the chemical compound with the formula ICl. It is a red-brown compound that melts near room temperature. Because of the difference in the electronegativity of iodine and chlorine, ICl is highly polar and behaves as a source of I+. Â»
As previously mentioned, iodine is the least reactive of the halogens, though it is still one of the more reactive elements. For example, while chlorine gas will halogenate carbon monoxide, nitrogen monoxide, and sulfur dioxide to phosgene, nitrosyl chloride, and sulfonyl chloride respectively, iodine will not do so.