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Online Edition: "Specifications for Flavourings"
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| Flavouring |
L-Tyrosine |
| Synonym(s) |
L-beta-(p-Hydroxyphenyl)alanine
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| Latest JECFA evaluation |
2004 (Session 63)
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| Status of specification |
Full |
| Chemical name |
L-Tyrosine
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| JECFA number |
1434 |
| CAS number |
60-18-4
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| FEMA number |
3736
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| COE number |
-
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| FLAVIS number |
17.022
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| Molecular weight |
181.19 |
| Chemical formula |
C9H11O3N
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| 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 |
http://www.fao.org/ag/agn/jecfa-flav/img/img/1434.gif
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