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Food safety and quality
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| Flavouring |
L-Leucine |
| Synonym(s) |
2-Amino-4-methylpentanoic acid;alpha-Aminoisocaproic acid;2-Aminoisobutylacetic acid;L-2-Amino-4-methylvaleric acid |
| Latest JECFA evaluation |
2004 (Session 63) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
L-Leucine |
| JECFA number |
1423 |
| CAS number |
61-90-5 |
| FEMA number |
3297 |
| COE number |
|
| FLAVIS number |
17.012 |
| Molecular weight |
131.17 |
| Chemical formula |
C6H13O2N |
| Physical form/odour |
Small white lustrous plates or crystalline powder; odourless |
| Solubility |
Soluble in water, acetic acid, dilute HCl, and alkaline hydroxides and carbonates |
| Solubility in ethanol |
Slightly soluble |
| Boiling point (°C) |
|
| Assay min % |
98% |
| Acid value max |
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| Refractive index |
|
| Specific gravity |
|
| Other requirements |
mp: 293-295°; Sp. rotation = -9.5 to -11.5° (20°) |
| ID Test |
IR |
| Spectrum |
 
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