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