2,4-Dichlorobenzyl-tris(p-tolyl)phosphonium iodide 73790-41-7 NSC 221225 Phosphonium, ((2,4-dichlorophenyl)methyl)tris(4-methylphenyl)-, iodide (9CI) Phosphonium, (2,4-dichlorobenzyl)tris(p-tolyl)-, iodide