Appearance
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Dark green to blackish powder
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Absorption maxima (MeOH) λ1
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645-655 nm
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Absorption maxima (MeOH) λ2
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520-525 nm
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Absorptivity (A1% 1cm,in MeOH, at Absorption maxima (MeOH) λ1max on dried subst.)
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Min 1250
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Absorptivity (A1% 1cm,in MeOH, at Absorption maxima (MeOH) λ2 max on dried subst.)
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Min 400
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Loss on drying (110°C)
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Max 10%
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