Synonyms: Phosphonothioicacid, trithiodi-, O,O,O,O-tetraethyl ester (6CI,7CI,8CI); Bis(O,O-diethylthiophosphoryl)trisulfide; Bis(diethoxyphosphinothioyl) trisulfide; H 56; NSC 403348;O,O-Diethylphosphorothiono trisulfide; Phosphine sulfide, trithiobis[diethoxy-;Vulcadone 3S