... No.:67953-76-8 Molecular Formula:C2H8O7P2.xK Potassium salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP.Kx)CAS ... No.:67953-76-8Molecular Formula:C2H8O7P2·xKPotassium salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Kx)CAS ... , it can be used in metal corrosion inhibitor, antifouling agent of swimming pool, metal cleaning, volume cleaning, iron dust controlling, metal pretreatment ...