Synonyms: 2,6-Xylenol,4,4'-thiodi- (6CI,7CI,8CI); 3,3',5,5'-Tetramethyl-4,4'-dihydroxydiphenylsulfide; 4,4'-Dihydroxy-3,3',5,5'-tetramethyldiphenyl sulfide;4,4'-Thiobis(2,6-dimethylphenol); 4,4'-Thiodi-2,6-xylenol;Bis(3,5-dimethyl-4-hydroxyphenyl) sulfide; Bis(4-hydroxy-3,5-dimethylphenyl)sulfide; Di(4-hydroxy-3,5-dimethylphenyl) sulfide