L-Serine

L-Serine Identification Name L-Serine Synonyms L-2-Amino-3-hydroxypropionic acid; 3-Hydroxy-alanine; Ser Molecular Formula C3H7NO3 Molecular Weight 105.09 CAS Registry Number 56-45-1 EINECS 200-274-3 Properties Density 1.6 Melting point 222 ºC Sublimation 150 ºC alpha 15.2 º (c=10, 2N HCl) Water solubility 250 g/L (20 ºC) Safety Data Safety Description S24/25 Packaging & Delivery Packaging Detail: 25kg/drum Delivery Detail prompt after order Specifications Item Specifications Results description White, odorless crystals, having a sweet taste Conforms Solubility Soluble in water; practically insoluble in absolute alcohol and in ether. Conforms Identification Infrared Absorption Conforms Assay ,% 98.5% ~ 101.5% 99.8% specific l rotation [a]D20° Meets the requirements +14.0o ~ +15.6o Meets the requirements +14.5o Heavy metals ,%(as Pb) ≤0.0015% 0.0013 Loss on drying,% ≤0.20% 0.10% Residue on ignition,% ≤0.1% 0.04% Sulfate(SO4),%(as SO4) ≤0.03% 0.01% Iron(as Fe),% ≤0.03% 0.02% Chromatographic purity not more than 0.5%of any individual impurit is found not more than 2.0% of total impurities Conforms is found Conforms Chloride,% ≤0.05% 0.03% Residual Solvent We don’t use any solvents during process water Conclusion: This product conforms to requirement of usp33 standard.