for the following products
Diethylenetriamine penta(methylene phosphonic acid) pentasodium salt | DTPMP heptasaodium salt | Heptasodium trihydrogen [[bis[2-[bis(phosphonatomethyl)amino]ethyl]amino]methyl]phosphonate and Diethylenetriamine penta(methylene phosphonic acid) heptasaodium salt
