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Online Edition: "Specifications for Flavourings"

Flavouring S-Isopropyl 3-methylbut-2-enethioate
Synonym(s) S-Isopropyl thiosenecioate;S-Isopropyl 3-methylthiocrotonate
Latest JECFA evaluation 2007 (Session 68)
Status of specification Full
Chemical name S-Isopropyl 3-methylbut-2-enethioate
JECFA number 1679
CAS number 34365-79-2
FEMA number 4260
COE number
FLAVIS number 12.134
Molecular weight 158.26
Chemical formula C8H14OS
Physical form/odour Colourless to yellowish liquid; Fruity, onion aroma
Solubility Practically insoluble to insoluble in water
Solubility in ethanol Soluble
Boiling point (°C) 235-236°
Assay min % 95%
Acid value max
Refractive index 1.486-1.492
Specific gravity 1.006-1.012
Other requirements