|
Appearance
|
White crystals or crystalline powder
|
|
Heavy metals
|
≤20ppm
|
|
Water content
|
≤0.20%
|
|
Residue on ignition
|
≤0.10%
|
|
Assay
|
98.5-101.5%
|
|
Organic volatile impurities
|
Meet the requirement
|
