16131-53-6 4,4'-Tetrathiobismorpholine 4,4'-Tetrathiodimorpholine Dimorpholine tetrasulfide Morpholine tetrasulfide Morpholine, 4,4'-tetrathiobis- Morpholine, 4,4'-tetrathiodi- (6CI,7CI,8CI) N,N'-Tetrathiodimorpholine