Phenol Red sodium salt CAS NO.34487-61-1

Chemical Formula C19H13NaO5S Molecular Weight 376.36 Melting Point 285?c Dye Content ~90% Solution Clarity (Water) To Pass …

Chemical Formula C19H13NaO5S Molecular Weight 376.36 Melting Point 285?c Dye Content ~90% Solution Clarity (Water) To Pass Transition Range pH 6.5 - 8.0 Yellow to Red violet Absorption Max (pH 1.2)503-506 nm 880 - 950 Absorption Max (pH 2.5)430-435 nm 560-620 Absorption Max (pH 6.5)430-435 nm 560 - 620 Absorption Max (pH 8.0)557-560 nm 970 - 1100 Loss On Drying (110? c) < 5%