L-leucine - 61-90-5

Test items Specifications
Appearance White crystals or crystalline powder
Specific rotation +14.9~+16.0C
State of solution(Transmittance) 98.0% min
Chloride(Cl) 0.020% max
Ammonium(NH4) 0.020% max
Sulfate(SO4) 0.020% max
Iron(Fe) 10ppm max
Heavy metals(Pb) 10ppm max
Arsenic(As2O3) 1ppm max
Other Amino Acids Chromatographically not detectable
Loss on drying 0.20% max
Residue on ignition(Sulfated) 0.10% max
Assay 99.0~100.5%
PH 5.5~6.5