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Appearance
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A white crystalline powder
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Assay (acidimetric; on dried basis)
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Min 99%
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Identity (IR)
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Conforms
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pH (10% solution)
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5.5 - 7.5
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UV transmittance at:
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at 200 nm (0.005 mol/L; 1cm; water)
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Min 70%
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at 220 nm (0.005 mol/L; 1cm; water)
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Min 90%
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at 250 nm (0.005 mol/L; 1cm; water)
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Min 98%
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Loss on drying (at 150°C)
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Max 2%
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