|
Appearance
|
White crystalline powder
|
|
Assay
|
Min 99.5%
|
|
Filter test
|
In accordance
|
|
Solubility (100 mg/mL in water)
|
Complete, colourless
|
|
pH
|
3.5 - 5.0
|
|
UV absorbance (10% solution in water)
|
|
|
at 330 nm
|
Amax : <0.05
|
|
at 340 nm
|
Amax : <0.03
|
|
at 350 nm
|
Amax : <0.02
|
|
at 500 nm
|
Amax : <0.02
|