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Online Edition: "Specifications for Flavourings"

Flavouring 2-Methyltetrahydrothiophen-3-one
Synonym(s) 2-Methyl-4,5-dihydro-3(2H)thio-phenone
Latest JECFA evaluation 2000 (Session 55)
Status of specification Full
Chemical name 4,5-Dihydro-2-methyl-3(2H)-thiophenone
JECFA number 499
CAS number 13679-85-1
FEMA number 3512
COE number 11601
FLAVIS number
Molecular weight 116.18
Chemical formula C5H8OS
Physical form/odour
Solubility insoluble in water; soluble in alcohol, fats
Solubility in ethanol
Boiling point (°C) 64-65° (11 mm Hg)
Assay min % 99%
Acid value max
Refractive index 1.510-1.520
Specific gravity 0.958-0.970
Other requirements
ID Test IR