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Appearance
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Green to dark green and brown to dark brown powder or crystals
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Infrared spectrum
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Conforms
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Absorption maxima ((c=0.005g/L; 0.1N NaOH in MeOH)
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554 - 560 nm
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Extinction coefficient
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Min 85000
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Solubility (1 mg /mL in methanol)
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Clear orange to red to dark red solution
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