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Online Edition: "Specifications for Flavourings"

Flavouring Ethyl trans-2-butenoate
Synonym(s) Ethyl crotonate
Latest JECFA evaluation 2008 (Session 69)
Status of specification Full
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
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