L-Tyrosine CAS NO.60-18-4

1. Description: Molecular Formula: C9H11NO3 Molecular Weight: 181.19 EINECS: 200-460-4 FEMA: 3736 Density: 1.34 Melting point: 290 oC Fla…

1. Description: Molecular Formula: C9H11NO3 Molecular Weight: 181.19 EINECS: 200-460-4 FEMA: 3736 Density: 1.34 Melting point: 290 oC Flash point: 176 oC Alpha: -11.65 o (c=5,DIL HCL/H2O 50/50) Water solubility: 0.45 g/L (25 oC) 2.Quality Standard(USP26) Items Limits Results Appearance White crystals or crystalline powder Conforms Specific rotation -9.8~-11.2° -10.3° Loss on drying ≤0.30% 0.11% Residue on ignition ≤0.40% 0.06% Chloride ≤0.04% ＜0.04% Sulfate ≤0.04% ＜0.04% Iron ≤30ppm ＜10ppm Heavy metals ≤15ppm ＜10ppm Chromatographic purity Individual impurity ≤0.5% Total impurities ≤2.0% Conforms Assay 98.5~101.5% 99.6%