|
Dye Content (by Spectrophotometry)
|
>95%
|
|
Transition Range
|
pH 4.7-6.3
|
|
|
Yellow-Purple
|
|
Solubility 0.1% (95% EtOH)
|
Clear solution
|
|
Absorption maximum (pH 4.7) ?1max
|
435-440nm
|
|
Absorption maximum (pH 6.3) ?2max
|
574-577nm
|
|
Absorptivity (A1%/1cm at pH 4.7 at ?1max)
|
340-370
|
|
Absorptivity (A1%/1cm at pH 6.3 at ?2max)
|
585-720
|
|
Loss On Drying (110°C)
|
<5%
|