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Appearance
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Blakish green powder
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Solubility (0.1% in methanol)
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Almost clear to opaque blue solution with greenish fluorescence
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Absorption maxima in methanol (λmax1)
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635 - 640 nm
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Absorption maxima in methanol (λmax2)
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520 - 526 nm
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Absorptivity (A 1%/1cm; at λmax1)
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Min 1050
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Absorptivity (A 1%/1cm; at λmax2)
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Min 810
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Molar ratio of Azur II:Eosin
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1.35:1
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Loss on drying (at 105°C; 1 hr)
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Max 10.0%
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Suitability (for microscopy)
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Passes test
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