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Online Edition: "Specifications for Flavourings"
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| Flavouring |
L-Leucine |
| Synonym(s) |
2-Amino-4-methylpentanoic acid
L-2-Amino-4-methylvaleric acid
2-Aminoisobutylacetic acid
alpha-Aminoisocaproic acid
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| Latest JECFA evaluation |
2004 (Session 63)
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| Status of specification |
Full |
| Chemical name |
L-Leucine
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| JECFA number |
1423 |
| CAS number |
61-90-5
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| FEMA number |
3297
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| COE number |
-
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| FLAVIS number |
17.012
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| Molecular weight |
131.17 |
| Chemical formula |
C6H13O2N
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| 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 |
- |
| Refractive index |
- |
| Specific gravity |
- |
| Other requirements |
mp: 293-295°; Sp. rotation = -9.5 to -11.5° (20°) |
| ID Test |
IR |
| Spectrum |
http://www.fao.org/ag/agn/jecfa-flav/img/img/1423.gif
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