| L-Leucine Chemical Properties |
| Melting point | >300 °C (lit.) |
| alpha | 15.4 º (c=4, 6N HCl) |
| Boiling point | 122-134 °C(Press: 2-3 Torr) |
| density | 1,293 g/cm3 |
| vapor pressure | <1 hPa (20 °C) |
| refractive index | 1.4630 (estimate) |
| FEMA | 3297 | L-LEUCINE |
| Fp | 145-148°C |
| storage temp. | 2-8°C |
| solubility | 1 M HCl: 50 mg/mL |
| form | powder |
| pka | 2.328(at 25℃) |
| color | White to Off-white |
| PH | 5.5-6.5 (20g/l, H2O, 20℃) |
| optical activity | [α]20/D +15.5°, c = 2 in 6 M HCl |
| Water Solubility | 22.4 g/L (20 C) |
| λmax | λ: 260 nm Amax: 0.05
λ: 280 nm Amax: 0.05 |
| JECFA Number | 1423 |
| Sublimation | 145-148 ºC |
| Merck | 14,5451 |
| BRN | 1721722 |
| Stability: | Stability Moisture and light sensitive. Incompatible with strong oxidising agents. |
| CAS DataBase Reference | 61-90-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Leucine(61-90-5) |
| EPA Substance Registry System | L-Leucine (61-90-5) |
| Safety Statements | 24/25 |
| WGK Germany | 3 |
| RTECS | OH2850000 |
| TSCA | Yes |
| HS Code | 29224995 |
| Hazardous Substances Data | 61-90-5(Hazardous Substances Data) |
Amino acid drugs. Used as amino acid infusion and comprehensive amino acid preparations. For the diagnosis and treatment of children with idiopathic high blood sugar and glucose metabolism disorders,bile liver disease associated with reduced secretion , anemia, poisoning, muscular dystrophy, poliomyelitis, neuritis and mental illness. Diabetes, cerebral vascular sclerosis and kidney disease associated with proteinuria and hematuria is contraindicated. Gastric and duodenal ulcer patients should not be served.
The product is used as a nutritional supplement,an amino acid infusion preparation and a comprehensive amino acid preparation,a hypoglycemic agent, a plant growth promoter.The product can be used as a spice according to GB 2760-8 .
China
