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Food safety and quality
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| |
| Flavouring |
L-Tyrosine |
| Synonym(s) |
L-beta-(p-Hydroxyphenyl)alanine |
| Latest JECFA evaluation |
2004 (Session 63) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
L-Tyrosine |
| JECFA number |
1434 |
| CAS number |
60-18-4 |
| FEMA number |
3736 |
| COE number |
|
| FLAVIS number |
17.022 |
| Molecular weight |
181.19 |
| Chemical formula |
C9H11O3N |
| Physical form/odour |
Colourless silky needles or white crystalline powder; odourless |
| Solubility |
Soluble in water and dilute mineral acid and alkali hydroxide solutions |
| Solubility in ethanol |
Slightly soluble |
| Boiling point (°C) |
|
| Assay min % |
98% |
| Acid value max |
|
| Refractive index |
|
| Specific gravity |
|
| Other requirements |
mp: 342-344°; Sp.rotation = -4.5 to -5.5° (2°, 5N HCl) |
| ID Test |
IR |
| Spectrum |
 
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