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»
In the second reaction neutral iodine combines with starch to form a blue-black compound. I. 2. + starch = blue-black compound. In the third reaction the neutral iodine gains an electron from a sulfur atom in the compound called sodium. thiosulfate and goes back to colorless iodine with a negative charge.