1. Tripotassium phosphate / TKP 97%min 2. CAS No.: 7778- ... softener, fertilizer, food grade 1. Specification:Tripotassium phosphate / TKP 97% / CAS No.:7778-53-2TKP Tech. gradeAssay97% ... metal0.001maxWater insoluble substances0.2%maxAppearanceWhite powderTKP Food gradeAssay (TKP)97% minChloride0.010% maxHeavy metal0.001 maxAs0.0003 ... emulsifier, flavoring agent; In meat Tripotassium phosphate TKP