77967-21-6 9,9,18,18-Tetraethyl-9,18-diazoniahexacosylenebis(triethylammonium) tetraiodide AMMONIUM, 9,9,18,18-TETRAETHYL-9,18-DIAZONIAHEXACOSYSLENEBIS(TRIETHYL-, TETRAIOD Ammonium, 9,9,18,18-tetraethyl-9,18-diazoniahexacosyslenebis(triethyl-, tetraiodide