... Kx)CAS No.:67953-76-8Molecular Formula:C2H8O7P2·xKPotassium salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Kx)CAS ... -76-8Molecular Formula: C2H8-xO7P2Kx Properties:HEDP•Kx is the potassium salt of HEDP, HEDP•Kx has better dissolution ability than that ... , it can be used in metal corrosion inhibitor, antifouling agent of swimming pool, metal cleaning, volume cleaning, iron dust controlling, ...