Food safety and quality: details

Flavouring	Methyl isobutanethioate
Synonym(s)	Propanethioic acid, 2-methyl-, S-methyl ester
Latest JECFA evaluation	2010 (Session 73)
Status of specification	Full
Information required
Chemical name	S-methyl 2-methylpropanethioate
JECFA number	1937
CAS number	42075-42-3
FEMA number	4586
COE number
FLAVIS number
Molecular weight	118.2
Chemical formula	C5H10OS
Physical form/odour	Clear colourless to pale yellow liquid; Penetrating fruity aroma
Solubility	Practically insoluble or insoluble in water
Solubility in ethanol	Soluble
Boiling point (°C)	70-72° (100 mm Hg)
Assay min %	98%
Acid value max
Refractive index	1.455-1.461
Specific gravity	0.961-0.967 (20°)
Other requirements
ID Test	MS
Spectrum