Food safety and quality: details

Flavouring	1-Methyldithio-2-propanone
Synonym(s)	Methyl 2-oxopropyl disulfide;1-(Methyldithio)-2-propanone;1-Methyldisulfanyl)acetone;1-(Methyldithio)-2-propanone
Latest JECFA evaluation	2012 (Session 76)
Status of specification	Full
Information required
Chemical name	1-(Methyldisulfanyl)propan-2-one
JECFA number	2088
CAS number	122861-78-3
FEMA number	4696
COE number
FLAVIS number
Molecular weight	136.24
Chemical formula	C4H8OS2
Physical form/odour	Clear to pale yellow liquid; Sulfurous sweet green aroma
Solubility	Soluble in water
Solubility in ethanol	Soluble
Boiling point (°C)	189-190°
Assay min %	90%
Acid value max
Refractive index	1.520-1.526
Specific gravity	1.132-1.144
Other requirements	SC: 2-3% 1-mercapto-2-propanone; 2-3% 1,1'-disulfanediyldipropan-2-one; 1-3% 1,3-dimethyltrisulfane
ID Test	IR HNMR
Spectrum