Transition Range.........................................................................pH 5.2 – pH 6.8
Greenish Yellow – Purple
Solubility 0.1% (EtOH)...............................................................Clear golden yellow Solution
Absorptivity 1%/1cm,
(pH 5.2) at λ max.431.0nm......................................................400-450
(pH 6.8) at λ max.589.0nm......................................................1000-1100
Loss on Drying at 1100C (1hr).................................................< 1%
