Phosphonic acid,P,P',P'',P'''-[1,2-ethanediylbis[nitrilobis(methylene)]]tetrakis-, sodium salt(1:5)

Empirical Formula: C₆H₁₂N₂Na₅O₁₂P₄
Molecular Weight: 543.0112
Nominal Mass: 543 Da
Average Mass: 543.0112 Da
Monoisotopic Mass: 542.884564 Da 
EINECS: 231-615-4
Structure of Ethylenediamine tetra(methylenephosphonic acid) pentasodium salt (CAS NO.7651-99-2):
                          
IUPAC Name: Pentasodium [2-[bis[[hydroxy(oxido)phosphoryl]methyl]amino]ethyl-(phosphonatomethyl)amino]methyl-hydroxyphosphinate
Canonical SMILES: C(CN(CP(=O)(O)[O-])CP(=O)([O-])[O-])N(CP(=O)(O)[O-])CP(=O)(O)[O-].[Na+].[Na+].[Na+].[Na+].[Na+]
InChI: InChI=1S/C6H20N2O12P4.5Na/c9-21(10,11)3-7(4-22(12,13)14)1-2-8(5-23(15,16)17)6-24(18,19)20;;;;;/h1-6H2,(H2,9,10,11)(H2,12,13,14)(H2,15,16,17)(H2,18,19,20);;;;;/q;5*+1/p-5
InChIKey: QPTMDBQLCWRDCK-UHFFFAOYSA-I
Product Category of Ethylenediamine tetra(methylenephosphonic acid) pentasodium salt (CAS NO.7651-99-2): Phosphonate antiscalant

 Ethylenediamine tetra(methylenephosphonic acid) pentasodium salt , its cas register number is 7651-99-2. It also can be called EDTMP pentasodium salt ; Phosphonic acid, (1,2-ethanediylbis(nitrilobis(methylene)))tetrakis-, pentasodium salt ; and Pentasodium trihydrogen (ethane-1,2-diylbis(nitrilobis(methylene)))tetrakisphosphonate .