Food safety and quality: details

Flavouring	L-Histidine
Synonym(s)	L-alpha-Amino-4(or 5)-imidazolepropionic acid;2-Amino-3(4-imidasyl)propionic acid
Latest JECFA evaluation	2004 (Session 63)
Status of specification	Full
Information required
Chemical name	L-Histidine
JECFA number	1431
CAS number	71-00-1
FEMA number	3694
COE number
FLAVIS number	17.008
Molecular weight	155.16
Chemical formula	C6H9O2N3
Physical form/odour	White crystals or crystalline powder; odourless
Solubility	Soluble in water; Insoluble in ether
Solubility in ethanol	Slightly soluble
Boiling point (°C)
Assay min %	98%
Acid value max
Refractive index
Specific gravity
Other requirements	mp: 282°; Sp.rotation = +37.5 to +39.5° (25°)
ID Test	MS
Spectrum