Leucine is a nutritional supplement and flavor enhancer. It uses mushroom infusion and synthetic active ingredients, as well as a blood pressure-lowering botanical growth promoter. It is a flavoring spice as defined in my country's GB 2760-96.
| Property | Value |
| Melting Point | >300 °C (lit.) |
| Specific Rotation | 15.4 ° (c=4, 6N HCl) |
| Boiling Point | 122-134 °C (Press: 2-3 Torr) |
| Bulk Density | 300-400kg/m³ |
| Density | 1.293 g/cm³ |
| Vapor Pressure | <1 hPa (20 °C) |
| Refractive Index | 1.4630 (estimate) |
| FEMA | 3297 | L-LEUCINE |
| Flash Point | 145-148°C |
| Storage Condition | 2-8°C |
| Solubility | Soluble in 1M HCl: 50 mg/mL |
| Form | Powder |
| pKa | 2.328 (at 25°C) |
| Color | White to off-white |
| Odor | Odorless |
| pH Value | 5.5-6.5 (20g/l, H2O, 20°C) |
| Biological Source | plant |
| Optical Rotation | [α]20/D +15.5°, c = 2 in 6 M HCl |
| Water Solubility | 22.4 g/L (20 °C) |
| Maximum Wavelength (λmax) | λ: 260 nm Amax: 0.05λ: 280 nm Amax: 0.05 |
| JECFA Number | 1423 |
| Sublimation Point | 145-148 °C |
| Merck | 14,5451 |
| BRN | 1721722 |
| Stability | Sensitive to moisture and light. Incompatible with strong oxidizing agents. |
| LogP | 0.80 |
| CAS Database | 61-90-5(CAS DataBase Reference) |
| NIST Chemistry Info | Leucine(61-90-5) |
| EPA Chemistry Info | L-Leucine (61-90-5) |