3520-76-1 Disodium N,N'-1,2-ethanediylbis(P-(1-methylethyl)phosphonamidate) Phosphicin Phosphicine Phosphicine disodium salt Phosphonamidic acid, N,N'-1,2-ethanediylbis(P-(1-methylethyl)-, disodium salt Phosphonamidic acid, N,N'-ethylenebis(P-isopropyl-, disodium salt (7CI,8CI)