3,4,5,6-Tetrabromophenolssulfonephthalein CAS:77172-72-6

3,4,5,6-Tetrabromophenolssulfonephthalein (TBPSPT) wani sinadarin rini ne da ake amfani da shi a matsayin mai nuna alama a fannin nazarin sinadarai. Tasirinsa da amfaninsa galibi suna da alaƙa da halayen canjin launi.

Sau da yawa ana amfani da TBPSPT a matsayin alamar acid-base saboda ikonsa na canza launi dangane da pH na maganin. Yawanci yana da ja a ƙarancin pH (yanayin acidic) da kuma rawaya a babban pH (yanayin asali). Wannan canjin launi na iya zama da amfani a aikace-aikace daban-daban, kamar titrations da tantance pH, inda ake buƙatar tantance ƙarshen amsawar ko acidity/alkalinity na maganin.

Bugu da ƙari, an yi amfani da TBPSPT a cikin nazarin sa ido kan muhalli, musamman don gano nau'ikan iskar oxygen masu amsawa (ROS). Lokacin da aka fallasa su ga ROS, kamar hydroxyl radicals ko singlet oxygen, TBPSPT yana fuskantar canjin launi, yana ba da alamar gani ta kasancewar waɗannan nau'ikan masu amsawa.