Abstract
Yoikabin C, one of food additives submitted to be authorized was analyzed by means of spectrophotometry, nonaqueous titration, and some other methods. It was found that it had the structure of lauryltrimethylammonium-2, 4, 5-trichlorophenoxide in which lauryltrimethylammonium was bound with 2, 4, 5-trichlorophenol by ionic bond, and had one or half a mol of water of crystallization.