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Dye Content (by Spectrophotometry)
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>90%
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|
Transition Range
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pH 3.0-4.6
|
|
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Greenish Yellow-Blue
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Solubility 0.1% (Dist. Water)
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Clear solution
|
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Absorption maximum (pH 3.0) ?1max
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434-439nm
|
|
Absorption maximum (pH 4.6) ?2max
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590-593nm
|
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Absorptivity (A1%/1cm at pH 3.0 at ?1max)
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320-370
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Absorptivity (A1%/1cm at pH 4.6 at ?2max)
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880-980
|
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Loss On Drying (110°C)
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<5%
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