Detailed Description  Product Name: L-theanine CAS #: 3081-61-6 Molecular Formula: C7H14N2O3 Molecular Weight: 174.2 Testing Item Specification Appearanc white crystalline powder Assay(HPLC) 98.0 102.0% Specific rotation(α)D20 (C=1, H2O) +7.7 to +8.5 Solubility(1.0g/20ml H2O) Clear Colorless Chloride(C1) ≤0.02% Loss on drying ≤0.5% Residue on ignition ≤0.2% PH 5.0 6.0 Melting point 202-215 °C Heavy Metals(as Pb) ≤10ppm Arsenic(as As) ≤4ppm Total plate count Mold and Yeast Salmonella E.Coli absent absent Shelf Life: Three years when properly stored Packing: 25kgs/drum