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Appearance
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Dark red to reddish brown colored powder
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Identity (IR)
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Passes test
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Solubility (1 mg/mL in water)
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Clear to slightly hazy red color solution
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Absorption maxima (0.001% in water + 1 ml 1% Na2CO3 solution)
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544 - 550 nm
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Absorptivity (A 1%/1cm; at λmax)
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Min 860.0
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Dye content
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Min 85.0%
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Loss on drying (at 110°C)
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Max 10.0%
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