1,3,4-THIADIAZOLE-2,5-DITHIOL 1,3,4-Thiadiazol-dithiol-(2,5) [German] 1,3,4-Thiadiazolidine-2,5-dithione 10472-91-0 10502-35-9 1072-71-5 2,5-Dimercapto-1,3,4-thiadiazole 2,5-Dimercapto-1,3,4-thiodiazole 2,5-Dimercaptothiadiazole 4628-94-8 55906-42-8 66057-67-8 AI3-18635 Bismuthiol I Dimercaptothiadiazole EINECS 214-014-1 NSC 4645 PY 61H USAF A-8354