Online Edition: "Specifications for Flavourings"


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Flavouring L-Lysine
Synonym(s) a,e-Diaminocaproic acid
(S)2,6-Diaminocaproic acid
L-2,6-Diaminohexanoic acid
Latest JECFA evaluation 2004 (Session 63)
Status of specification Full
Chemical name L-Lysine
JECFA number 1439
CAS number 56-87-1  
FEMA number 3847
COE number -
FLAVIS number 17.026  
Molecular weight 146.19 
Chemical formula C6H14O2N2  
Physical form/odour White crystals or crystalline powder; odourless 
Solubility Soluble in water 
Solubility in ethanol Slightly soluble 
Boiling point (°C) -
Assay min % 97%
Acid value max -
Refractive index -
Specific gravity -
Other requirements mp: 215°; Sp.rotation = +12.5 to +13.5° (23°, 6N HCl)
ID Test MS
Spectrum http://www.fao.org/ag/agn/jecfa-flav/img/img/1439.gif