Bromothymol Blue 25g CAS 76-59-5
15757-25g

Specification:

Appearance...................................Pink to Purple colour powder
Appearance of Solution...........Passes test
Loss on drying(at 110°C).........3.0% max

Formula:   C27H28Br2O5S
CAS:         76-59-5
Mwt:          624.40

Bromothymol Blue acts as a weak acid in solution.
Yellow at pH 6.0 and blue at pH 7.6. It is green in neutral solution.