for the following products
Diethylenetriaminepenta(methylenephosphonic acid) sodium salt | Phosphonic acid,[[(phosphonomethyl)imino]bis[2,1-ethanediylnitrilobis(methylene)]]tetrakis-,sodium salt (1:?) | [[(Phosphonomethyl)imino]bis[(ethylenenitrilo)bis(methylene)]]tetrakisphosphonic acid, sodium salt and Diethylene triamine pentamethylene phosphonic acid heptasodium salt
