... : 142.11Structural Formula: Quality standard of Kojic acid, CAS: 501-30-4 ItemSpecificationResultsAppearanceWhite or off white crystalWhite or ... .5Chloride, ppm100max 40ConclusionComplies with standard.Introduction of Kojic acid, CAS: 501-30-41). Kojic acid, (5-hydroxy-2- ... pyrone, CAS: 501-30-4) is easily dissolved in water, alcohol and acetone; slightly dissolved in ether, ethyl acetate,chloroform ...