|
Appearance
|
White Crystalline powder
|
|
Assay (acidimetric; on dried basis)
|
Min 99.0%
|
|
pH (10% solution in water)
|
5 - 7.5
|
|
UV absorbance (0.005 mol/L)
|
-
|
|
at 210 nm
|
Max 0.1
|
|
at 220 nm
|
Max 0.06
|
|
at 230 nm
|
Max 0.04
|
|
at 260 nm
|
Max 0.02
|
|
Loss on drying (at 120°C)
|
Max 2.0%
|