L-Leucine 99+% For Biochemistry
(S)-2-Amino-4-methylpentanoic acid
Product Code. |
01538A |
Grade |
For Biochemistry |
Purity |
99% |
CAS No. |
61-90-5 |
Molecular Formula |
C6H13NO2 |
Molecular Weight |
131.18 |
H.S.Code |
2922.49900 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
White shining powder |
Melting point/ Freezing point [°C] |
> 300 °C |
| Density [g/cm3] |
1.293 |
Solubility in water [% weight] |
Soluble in water |
Packaging
Specification
| Appearance | White crystalline powder |
| Assay (by HClO4 titration) | Min 99.0% |
| Specific optical rotation ([?]20/D; c=4 in 6 M HCl; on dried substance) | +14.9 to +16.50 ° |
| pH (1% solution) | 5.5 - 7.0 |
| Appearance of solution | Passes test |
| Insoluble matter in HCl 1 mol/L | Passes test |
| Loss on drying (at 105°C) | Max 0.2% |
| Residue on ignition (as SO4) | Max 0.1% |
| Chloride (Cl) | Max 0.02% |
| Sulphate (SO4) | Max 0.03% |
| Iron (Fe) | Max 0.001% |
| Heavy metal (as Pb) | Max 0.001% |
| Ammonium (NH4) | Max 0.02% |
| Foreign amino acids | Max 0.3% |
| Other ninhydrin positive substances (as glycine) | Max 0.1% |
Safety Information and Hazard Symbols