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Appearance
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Colorless hygroscopic crystals with faint odor
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Assay
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Min 99.0%
|
|
Water (H2O)
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Max 1.0 %
|
|
pH (10% solution in water; 20°C)
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6.5 to 7.5
|
|
UV absorbance (10% in water)
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|
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at 250 nm
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Max 0.05
|
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at 260 nm
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Max 0.04
|
|
at 270 nm
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Max 0.03
|
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at 280 nm
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Max 0.02
|
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at 500 nm
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Max 0.02
|