Food safety and quality: details

Flavouring	Ethyl trans-2-butenoate
Synonym(s)	Ethyl crotonate
Latest JECFA evaluation	2008 (Session 69)
Status of specification	Full
Information required
Chemical name	2-Butenoic acid, ethyl ester
JECFA number	1806
CAS number	10544-63-5
FEMA number	3486
COE number
FLAVIS number
Molecular weight	114.14
Chemical formula	C6H10O2
Physical form/odour	Colourless liquid; Powerful sour caramellic-fruity aroma
Solubility	Insoluble in water; soluble in oils
Solubility in ethanol	Soluble
Boiling point (°C)	136-137°
Assay min %	98%
Acid value max	2
Refractive index	1.422-1.428
Specific gravity	0.916-0.921
Other requirements
ID Test	MS
Spectrum