Item	Index
Specific rotatory power[α] D20	+26.9o — +27.9o
Clarity	≥98.0%
Chloride[CL]	≤0.02%
Ammonium salt[NH4]	≤0.02%
Sulfate[SO4]	≤0.02%
Iron salt[Fe]	≤10 ppm
Heavy metal[Pb]	≤10 ppm
Arsenic salt[As2O3]	≤1 ppm
Other amino acid	Color layer can not be checked out.
Loss on drying	≤0.50%
Residue on ignition	≤0.10%
Content	98.5 — 101.0%