Items

Quality index

Results

Appearance

　white to light yellow crystalline 　solid

　light yellow 　crystalline solid

[a]D25

　-40°～-43°

　-41°

Assay

　≥97.0％

　97.3％

Residue on ignition

　≤0.1%

　meet the regulation

Loss on drying

　<2.0%

　1.5%

Heavy metal

　≤20ppm

　qualified