CPC Main Group C01D 3/00 Halides of sodium, potassium or alkali metals in general 7 direct subcodes Child Classifications Navigate with arrow keys, Enter to open C01D 3/02 Fluorides C01D 3/04 Chlorides C01D 3/10 Bromides C01D 3/12 Iodides C01D 3/14 Purification C01D 3/22 Preparation in the form of granules, pieces, or other shaped products C01D 3/26 Preventing the absorption of moisture or caking of the crystals