... Weight: 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-hydroxymethyl ... Kojic acid, (5-hydroxy-2-hydroxymethyl-1,4-pyrone, CAS: 501-30-4) is used in producing biological pesticides. ...