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Appearance
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A white to off white powder
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pH range (8.2 - 10.0)
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Colourless to red-violet
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Absorption maxima (buffer pH 9.8)
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551 - 554 nm
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Sensitivity
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Passes test
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Sulphated ash
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Max 0.05%
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Chloride (Cl)
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Max 0.01%
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Sulphate (SO4)
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Max 0.01%
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Loss on drying (at 110°C)
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Max 1%
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