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Online Edition: "Specifications for Flavourings"

Flavouring Methyl 3-methylthiopropionate
Synonym(s) Methyl beta-methiopropionate;Methyl beta-(methylmercapto)propionate
Latest JECFA evaluation 1999 (Session 53)
Status of specification Full
Chemical name Methyl 3-(methylthio)propionate
JECFA number 472
CAS number 13532-18-8
FEMA number 2720
COE number 428
FLAVIS number
Molecular weight 134.19
Chemical formula C5H10O2S
Physical form/odour colourless to pale yellow liquid with onion-like odour
Solubility very slightly soluble in water, soluble in alcohol
Solubility in ethanol
Boiling point (°C) 74-75° (13 mm Hg)
Assay min % 97%
Acid value max 1
Refractive index 1.462-1.468
Specific gravity 1.069-1.078
Other requirements
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