Iodine combines with chlorine to form iodine monochloride, IC1, which may be obtained by passing dry chlorine over dry iodine until the iodine is completely liquefied, or according to R.
It crystallizes in long yellow needles and decomposes readily on heating into the monochloride and chlorine.
Chem., 1889, 3, p. 11.) Iodine monochloride in glacial acetic acid solution was used by A.
Although hypoiodous acid is not known, it is extremely probable that on adding iodine or iodine monochloride to a dilute solution of a caustic alkali, hypoiodites are formed, the solution obtained having a characteristic smell of iodoform, and being of a pale yellow colour.
Thallic chloride, T1C1 3, is obtained by treating the monochloride with chlorine under water; evaporation in a vacuum gives colourless deliquescent crystals of T1C1,.H20.