used as supplementary agent of nutrition.It is one of the needed amino acids for human body

Purity(on dry basis)	≥98.5%
Specific Rotation[a]20D	-33.0°~-35.0°on dry basis
Loss on drying	≤0.3%
Residue on ignition	≤0.1%
PH	5.4~6.0
Cl	≤0.02%
NH4+	≤0.02%
ArsenicAs	≤0.5ppm
Heavy metalsPb	≤10ppm

L-Phenylalanie