2664-63-3 4,4'-Dihydroxydiphenyl sulfide 4,4'-Dihydroxydiphenylsulfide 4,4'-Dioxydiphenyl sulfide 4,4'-Dioxydiphenylsulfide 4,4'-Thiobisphenol 4,4'-Thiodiphenol Bis(4-hydroxyphenyl) sulfide Bis(4-oxyphenyl)sulfide Bis(p-hydroxhphenyl) sulfide DFS EINECS 220-197-9 NSC 203030 PHENOL, 4,4'-THIODI- Phenol, 4,4'-thiobis- Sulfide, bis(4-hydroxyphenyl) Thiobisphenol p,p'-Dihydroxydiphenyl sulfide