L-Leucine
Chemical
Name: (S)-2-Amino-4-methylpentanoic acid
Molecular Formula: C6H13NO2
Molecular Weight: 131.17
Cas No: [61-90-5]
Characteristics: White crystals or crystalline powder.
Odorless, slightly bitter taste. Freely soluble in formic acid, sparingly
soluble in water, very slightly soluble in ethanol or in ether, dissolves
in dilute hydrochloric acid.
Quality Standards: USP25
| Item | USP25 |
| Description | White crystals or crystalline powder |
| Identification | Infrared absorption |
| Specific rotation [a]D25 ° | +14.9 °- +17.3° |
| PH | 5.5-7.0 |
| Loss on drying | ≤ 0.2% |
| Residue on ignition | ≤ 0.4% |
| Chloride | ≤ 0.05% |
| Sulfate | ≤ 0.03% |
| Iron | ≤ 0.003% |
| Heavy metals | ≤ 0.0015% |
| Organic volatile impurities | Meets the requirements |
| Assay | 98.5-101.5% |
Packaging and Storage: In 25kgs
f iber drum double polyethylene bags inside; Preserve in well- closed
containers, at controlled room temperature.
Recommended limit: 2 year.
