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Online Edition: "Specifications for Flavourings"

Flavouring 2-Acetylthiazole
Synonym(s) 1-(Thiazol-2-yl)ethan-1-one;2-Thiazolyl methyl ketone;Methyl 2-thiazolyl ketone
Latest JECFA evaluation 2002 (Session 59)
Status of specification Full
Chemical name 2-Acetylthiazole
JECFA number 1041
CAS number 24295-03-2
FEMA number 3328
COE number 11726
FLAVIS number
Molecular weight 127.17
Chemical formula C5H5ONS
Physical form/odour Clear, colourless to pale yellow, oily liquid; cocoa, hazelnut, popcorn, bread-like odour
Solubility Insoluble in water; Soluble in fats, oils, most organic solvents
Solubility in ethanol Miscible at room temperature
Boiling point (°C) 89-91° (12 mm Hg)
Assay min % 97%
Acid value max
Refractive index 1.543-1.550
Specific gravity 1.225-1.229
Other requirements