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Online Edition: "Specifications for Flavourings"

Flavouring 1-Phenyl-1,2-propanedione
Synonym(s) Methyl phenyl diketone;Methyl phenyl glyoxal;Acetyl benzoyl
Latest JECFA evaluation 2001 (Session 57)
Status of specification Full
Chemical name 1-Phenyl-1,2-propanedione
JECFA number 833
CAS number 579-07-7
FEMA number 3226
COE number 2275
FLAVIS number
Molecular weight 148.16
Chemical formula C9H8O2
Physical form/odour yellow oily liquid with a pungent plastic odour
Solubility insoluble in water; soluble in organic solvents, oils
Solubility in ethanol miscible at room temperature
Boiling point (°C) 103-105° (14 mm Hg)
Assay min % 97%
Acid value max
Refractive index 1.526-1.536
Specific gravity 1.096-1.116
Other requirements
ID Test IR