CPC Main Group C01B 7/00 Halogens; Halogen acids (oxyacids C01B11/00) 5 direct subcodes Child Classifications Navigate with arrow keys, Enter to open C01B 7/01 Chlorine; Hydrogen chloride C01B 7/09 Bromine; Hydrogen bromide C01B 7/13 Iodine; Hydrogen iodide C01B 7/19 Fluorine; Hydrogen fluoride C01B 7/24 Inter-halogen compounds