1. Main manufacturer and supplier in China. 2. Producing the HEDP from yellow phosphorous and liquide chlorine. Chemical name:1-Hydroxyethylidene-1,1-Diphosphonic Acid(HEDP)Abbreviation: HEDP(dequest 2010)Molecular Formula: C2H8O7P2Molecular Weight: 206CAS Number: 2809-21-4 Application Notes: Noted for its excellent CaCO3 scale inhibition and chlorine stability.Recommended Uses: Cooling water ...