Food safety and quality: details

Flavouring	(E)-2-Butenoic acid
Synonym(s)	(E)-Crotonic acid
Latest JECFA evaluation	2004 (Session 63)
Status of specification	Full
Information required
Chemical name	But-2-enoic acid
JECFA number	1371
CAS number	107-93-7
FEMA number	3908
COE number
FLAVIS number	08.072
Molecular weight	86.09
Chemical formula	C4H6O2
Physical form/odour	Off-white powder; Harsh, pungent, acrylic odour
Solubility	Slightly soluble in water
Solubility in ethanol	Soluble
Boiling point (°C)
Assay min %	98%
Acid value max
Refractive index
Specific gravity
Other requirements	mp: 71-73°
ID Test	NMR
Spectrum