As calciners they are used in tin mines and for the chlorination of silver ores.
Long-continued treatment with halogens may, in some cases, result in the formation of aromatic compounds; thus perchlorbenzene, C 6 C1 6, frequently appears as a product of exhaustive chlorination, while hexyl iodide, C 6 H 13 I, yields perchlorand perbrom-benzene quite readily.
Simple chlorination units using sodium hypochlorite (bleach) help to ensure potability to point of use.
Chlorination of this substance gave a monochloracetic acid; we will assume the chlorine atom to replace the b hydrogen atom.
Chlorination of water may account for a small rise in cancer risk.