Detailed Product Description

L-Serine specifications

 Item                            Limit                     Result

 Assay                       99.0--101.0%           99.8%

 PH                              5.2--6.2                   5.7

 Specific rotation [a]_D²⁰ +14.4°-- +15.5°   +15.1°

 State of solution            clear & colorless    clear & colorless       

(Transmittance T₄₃₀)          ≥98.0%                99.6%

 Chloride(Cl)                   ≤0.020%              <0.020%

 Ammonium(NH₄)           ≤0.02%                <0.02%

 Sulfate(SO₄)                 ≤0.020%               <0.020%

 Iron(Fe)                        ≤10ppm                 <10ppm

 Heavy metals(Pb)          ≤10ppm                 <10ppm

 Arsenic(As₂O₃)             ≤1ppm                   <1ppm

 Other amino acids         ≤0.5%                   Conforms

Loss on drying                ≤0.20%                  0.12%

 Residue on ignition         ≤0.10%                  0.04%   

 Conclusion             Above items passed test according to the standard of AJI97