Aromatic halogenation with bromine, chlorine, or iodine gives the corresponding aryl halides. Activated carbon can interact with chlorine, bromine and fluorine. Ytterbium forms both dihalides and trihalides with the halogens fluorine, chlorine, bromine, and iodine. Iron reacts with fluorine, chlorine, and bromine to form Iron(III) halides. All of the lanthanides form trihalides with fluorine, chlorine, bromine and iodine. Addition of fluorine, chlorine, and bromine occurs for C. Such compounds are prepared by treating CuPc with chlorine, bromine or oleum. It also measured atmospheric chemicals including hydrochloric acid, hydrofluoric acid, bromine and iodine. It is also attacked by chlorine, bromine, iodine, and sulfur. Representative minerals include borax, sodium nitrate, sodium, iodine, calcium, bromine, and strontium compounds. It will violently react with interhalogens (e.g., bromine pentafluoride; chlorine trifluoride). Chlorine azide (ClN) and bromine azide (BrN) are extremely sensitive and explosive. Therefore, they are generated by adding iron filings to bromine or chlorine. These include SeSX, with X being chlorine or bromine. Bromine and iodine can also be used as disinfectants.