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：USP24, AJI92 and etc.
tem | AJI92 | USP24 |
| Assay, % | 98.5~100.5 | 98.5~100.5 |
| pH value | 5.5~6.5 | 5.5~7.0 |
| Specific rotation[a]D20o | +14.9o~+16.0o | +14.9o~+17.3o |
| Chloride (CI) , % | ≤0.02 | ≤0.05 |
| Ammonium (NH4), % | ≤0.02 | - - - |
| Sulfate (SO4), % | ≤0.02 | ≤0.03 |
| Iron (Fe), % | ≤0.001 | ≤0.003 |
| Heavy metals, % | ≤0.001 | ≤0.0015 |
| Arsenic, % | ≤0.0001 | - - - |
| Other amino acids, | Not detd. | - - - |
| Loss on drying, % | ≤0.2 | ≤0.2 |
| Residue on ignition, % | ≤0.1 | ≤0.4 |
| Organic volatile impurities, % | - - - | Conforms |
Package and Transport：Fibre drum double polyethylene bags inside (25kgs)
Storage：Cool, dry, dark in closed containers, recommended limit 2 years.
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L-Isoleucine
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Hebei Huaheng Biological Technology Co., Ltd
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