10310-38-0 Cyagard RF-1 EINECS 233-688-8 Ethylenebis(tris(2-cyanoethyl)phosphonium bromide) Ethylenebis(tris(2-cyanoethyl)phosphonium) dibromide NSC 222470 Phosphonium, 1,2-ethanediylbis(tris(2-cyanoethyl)-, dibromide Phosphonium, ethylenebis(tris(2-cyanoethyl)-, dibromide