Bromine monochloride

Bromine monochloride, also known as bromine(I) chloride, bromochloride, or bromine chloride, is a chemical compound. Its chemical formula is BrCl. It contains bromine in its +1 oxidation state and chloride ions. 
Properties.
It is a red-brown gas. It is an oxidizing agent. It is used in analytical chemistry to see how much mercury is in something. It can be used to kill bacteria and mold in industrial places. It is highly toxic.