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Appearance
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White crystalline powder
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|
Assay (acidimetric; on dried basis)
|
Min 99%
|
|
Identity (IR)
|
Conforms
|
|
pH (10% solution)
|
5.5 - 7.5
|
|
UV transmittance (0.005 mol/L; 1cm; water)
|
|
|
at 200 nm
|
Min 70%
|
|
at 220 nm
|
Min 90%
|
|
at 250 nm
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Min 98%
|
|
Loss on drying (at 120°C; vacuum)
|
Max 2%
|