Thymol Blue,Cas no 76-61-9, Nile Chemicals

CAS No.	76-61-9
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
Absorptivity (pH 1.2) 543-547 nm	400 - 500
Absorptivity (pH 2.8) 431-436 nm	200 - 300
Absorptivity (pH 7.8) 431-436 nm	200 - 300
Absorptivity (pH 9.5) 594-598 nm	450 - 550
Loss On Drying (110° c)	<3%