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Online Edition: "Specifications for Flavourings"

Flavouring Methyl 3-(methylthio)butanoate
Synonym(s) 3-(Methylthio) butyric acid methyl ester;3-Methylsulfanyl-butyric acid methyl ester
Latest JECFA evaluation 2007 (Session 68)
Status of specification Full
Chemical name Methyl 3-(methylthio)butanoate
JECFA number 1690
CAS number 207983-28-6
FEMA number 4166
COE number
FLAVIS number
Molecular weight 148.23
Chemical formula C6H12O2S
Physical form/odour Colourless liquid; Sweet, cooked aroma
Solubility Insoluble in water
Solubility in ethanol Soluble
Boiling point (°C) 87° (58 mm Hg)
Assay min % 98%
Acid value max
Refractive index 1.468-1.474
Specific gravity 1.029-1.033
Other requirements