L-Tryptophan - Skyrun Industrial
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Chemical name:L-Tryptophan
MF:C11H12N2O2
MW:204.23
CAS:73-22-3

Description White crystalline powder
Identification Meet the requirement
Appearance of solution Clear and Colourless
Specific rotation[a]D20            -30.0~-33.0         
Loss on drying                        ≤0.50%
Residue on ignition                             ≤0.10%  
Chloride(Cl) ≤0.02%
Sulfate(SO4)                              ≤0.03%       
Ammonium(NH4) ≤0.02%
Iron(Fe)                               ≤20PPM           
Heavy metals(Pb)                    ≤ 10PPM              
Lead(pb) 3ppm max
As2O3(As)                  0.5ppm max
Mercury (Hg) 0.1ppm max
Cadmium (Cd) 1ppm max
Assay                                    98.5~101.5%             
Other amino acids Meet the requirement