Food safety and quality
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Flavouring |
L-Threonine |
Synonym(s) |
2-Amino-3-hydroxybutanoic acid |
Latest JECFA evaluation |
2012 (Session 76) |
Status of specification |
Full |
Information required |
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Chemical name |
(2S,3R)-2-Amino-3-hydroxybutanoic acid |
JECFA number |
2119 |
CAS number |
72-19-5 |
FEMA number |
4710 |
COE number |
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FLAVIS number |
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Molecular weight |
119.12 |
Chemical formula |
C4H9NO3 |
Physical form/odour |
White crystalline powder; slight savoury aroma |
Solubility |
Sparingly soluble in water; Soluble in buffer systems pH 5.5 |
Solubility in ethanol |
Practically insoluble |
Boiling point (°C) |
NA |
Assay min % |
98% |
Acid value max |
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Refractive index |
NA |
Specific gravity |
NA |
Other requirements |
m.p. 283-284° (decomposition) |
ID Test |
IR |
Spectrum |
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