D-Leucine 

Appearance
White fine crystals or White power

Specific rotation(20/D)
(C=4 in 6N HCL)
-14.0 to -16.0°Degree

State of solution
(Transmittance)
Clear and colorless
Not less than 98.0%

Chloride (Cl)
Not more than 0.020%

Heavy metals(Pb)
Not more than 10ppm

Arsenic(As2O3)
Not more than 1ppm

Other amino acids
Chromatographically
Not detectable

Loss on drying
Not more than 0.20%

Residue on ignition(sulfated)
Not more than 0.10%

Assay
99 to100.5%