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Online Edition: "Specifications for Flavourings"

Flavouring 4-(Methylthio)-2-butanone
Latest JECFA evaluation 2000 (Session 55)
Status of specification Full
Chemical name 4-(Methylthio)-2-butanone
JECFA number 497
CAS number 34047-39-7
FEMA number 3375
COE number 11688
FLAVIS number
Molecular weight 118.19
Chemical formula C5H10OS
Physical form/odour sweet, sulfurous, fruity flavor like arrowhead
Solubility insoluble in water
Solubility in ethanol
Boiling point (°C) 106° (55 mm Hg); 77-78° (20 mm Hg)
Assay min % 97%
Acid value max
Refractive index 1.470-1.481
Specific gravity 1.000-1.007
Other requirements
ID Test MS