Appearance

White crystalline powder

Clarity   1% in water (w/v)
1% in methanol (w/v)

Clear and clorless

Melting point

178~182°C

Specific rotation

-0.1~ +0.1°

pH (1% in water w/v)

6.0~8.0

Loss on drying

≤0.5%

Residue on ignition

≤0.2%

Heavy metals

≤10ppm

Assay for ibuprofen

57.00%~60.00%

Assay for lysine

40.00%~43.00%