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Online Edition: "Specifications for Flavourings"

Flavouring L-Phenylalanine
Synonym(s) L-alpha-Amino-beta-phenylpropionic acid;L-2-Amino-3-phenylpropionic acid;Aminohydrocinnamic acid
Latest JECFA evaluation 2004 (Session 63)
Status of specification Full
Chemical name L-Phenylalanine
JECFA number 1428
CAS number 63-91-2
FEMA number 3585
COE number
FLAVIS number 17.018
Molecular weight 165.19
Chemical formula C9H11O2N
Physical form/odour Colourless or white platelike crystals or crystalline powder; odourless
Solubility Soluble in water; Slightly soluble in 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: 270-275°; Sp.rotation = -17.6 to -18.6° (20°)
ID Test MS