Organic IntermediateChina Ethylenediamine Tetra (methylene-phosphonic acid) Pentasodium Salt (EDTMPA) CAS#1429-50-1, Find details about China Amino Trimethylene Phosphonic Acid, Bis(hexamethylene) Triaminopenta (Methylene-Phos from Ethylenediamine Tetra (methylene-phosphonic acid) Pentasodium Salt (EDTMPA) CAS#1429-50-1