Thymol Blue CAS NO.76-61-9

Chemical Formula C27H30O5S Molecular Weight 466.60 Melting Point 221 - 224?c Dye Content ~95% Solution Clarity (EtOH) To Pas…

Chemical Formula C27H30O5S Molecular Weight 466.60 Melting Point 221 - 224?c Dye Content ~95% Solution Clarity (EtOH) To Pass Transition Range pH 1.2 - 2.8 Red to Yellow pH 7.8 - 9.5 Yellow to Blue Absorption Max (pH 1.2)543-547 nm 400-500 Absorption Max (pH 2.8)431-436 nm 200-300 Absorption Max (pH 7.8)431-436 nm 200-300 Absorption Max (pH 9.5)594-598 nm 450-550 Loss On Drying (110?c) < 3%