L-Serine also known as β-hydroxyalanine, is a neutral aliphatic amino acid containing hydroxyl groups [4]. Serine is a neutral aliphatic hydroxy amino acid, a non-essential amino acid, chemical formula C3H7NO3, molecular weight 105.09, melting point 496~501 K, easily soluble in water, almost insoluble in non-polar solvents. Serine can be used as an additive for skin nutrition; serine has hydroxyl groups, so it is one of the amino acids with strong moisturizing ability, and it is often used as a moisturizing agent for skin. It can be made into liposomes with phospholipids, and then combined with other active ingredients for better moisturizing effect; serine can promote hair growth and reduce hair loss.
| CAS NO | 56-45-1 |
| Formula | C3H7NO3 |
| Molecuht Weight | 105.09 |
| Appearance | White powder |
| EINECS No | 200-274-3 |
| Item | Standard |
| Appearance | White Power |
| Specific Rotation [a]D20o | 15.2º |
| Transmittance | >99.0% |
| Chloride (Cl) | ≤0.02% |
| Sulfate (SO4) | ≤0.02% |
| Iron (Fe) | ≤0.001% |
| Heavy Metals (Pb) | <10ppm |
| Ammonium | <0.02% |
| Loss on Drying | ≤0.2% |
| Residue in Ignition | ≤0.1% |
| Assay | 0.99 |