Food safety and quality: details

Flavouring	trans-4-Hexenal
Synonym(s)	Hex-4-enal;trans-Hex-4-enal;4-Hexenal trans;E-4-Hexenal
Latest JECFA evaluation	2007 (Session 68)
Status of specification	Full
Information required
Chemical name	4(E)-Hexenal
JECFA number	1622
CAS number	25166-87-4
FEMA number	4046
COE number
FLAVIS number
Molecular weight	98.14
Chemical formula	C6H10O
Physical form/odour	Colourless liquid; Green vegetable aroma
Solubility	Soluble in hexane and diethyl ether; insoluble in water
Solubility in ethanol	Soluble
Boiling point (°C)	125-129°
Assay min %	92% (sum of cis and trans isomers)
Acid value max
Refractive index	1.417-1.424
Specific gravity	0.824-0.832
Other requirements	Contains 76% min trans-4-hexenal, 16-20% cis-4-hexenal, 2-4% 3-hexen-1-ol and 1-2% hexanal
ID Test	IR MS
Spectrum