... HEDP liquid -- Hydroxy Ethylidene-1,1-Diphosphonic Acid water treatment chemical CAS No. 2809-21-42H8O7P2 Molecular weight: ... and professional water treatment chemicals factory in China, and have ten years experience in water treatment chemicals .can manufacture all kinds of water treatment chemicals. The ... NA2,HEDPNA4 ATMPNA5.EDTMPS NA.3)Polymer: PAA, PAAS, HPMA, MA-AA, AA/AMPS, PESA, PASP,4)Bacterial ...