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Online Edition: "Specifications for Flavourings"

Flavouring 3-Penten-2-one
Synonym(s) Methyl propenyl ketone;Ethylidene acetone
Latest JECFA evaluation 2002 (Session 59)
Status of specification Full
Chemical name Pent-3-en-2-one
JECFA number 1124
CAS number 625-33-2
FEMA number 3417
COE number 666
FLAVIS number
Molecular weight 84.12
Chemical formula C5H8O
Physical form/odour Colourless liquid; fruity odour becoming pungent on storage
Solubility slightly soluble in water; soluble in oil
Solubility in ethanol Miscible at room temperature
Boiling point (°C) 122°
Assay min % 98%
Acid value max
Refractive index 1.433-1.437
Specific gravity 0.860-0.865
Other requirements