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Online Edition: "Specifications for Flavourings"

Flavouring 4-Phenyl-3-buten-2-one
Synonym(s) Methyl styryl ketone;Benzylideneacetone
Latest JECFA evaluation 2001 (Session 57)
Status of specification Full
Chemical name 4-Phenyl-2-buten-2-one
JECFA number 820
CAS number 122-57-6
FEMA number 2881
COE number 158
FLAVIS number
Molecular weight 146.19
Chemical formula C10H10O
Physical form/odour colourless to slightly yellow crystalline solid with a sweet, pungent, creamy, floral odour
Solubility insoluble in water; soluble in organic solvents, oils
Solubility in ethanol very soluble
Boiling point (°C) 260°
Assay min % 97%
Acid value max
Refractive index NA
Specific gravity NA
Other requirements mp: 39-42°
ID Test IR