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Online Edition: "Specifications for Flavourings"

Flavouring (E,E)-2,4-Hexadienal
Synonym(s) Sorbaldehyde;2,4-Hexadienal, (trans, trans)-;2-Propyleneacrolein;Sorbic aldehyde
Latest JECFA evaluation 2003 (Session 61)
Status of specification Full
Chemical name (2E,4E)-Hexa-2.4-dienal
JECFA number 1175
CAS number 142-83-6
FEMA number 3429
COE number
FLAVIS number 05.057
Molecular weight 96.13
Chemical formula C6H8O
Physical form/odour Yellow liquid; powerful but sweet-green aroma, in dilution pleasant citrusy green
Solubility Slightly soluble in water; miscible in oils
Solubility in ethanol soluble
Boiling point (°C) 64° (15 mm Hg)
Assay min % 97%
Acid value max 1
Refractive index 1.538-1.543
Specific gravity 0.896-0.902 (20°)
Other requirements
ID Test MS