Food safety and quality: details

Flavouring	4-Mercapto-4-methyl-2-pentanone
Synonym(s)	2-Mercapto-2-methylpentan-4-one
Latest JECFA evaluation	2003 (Session 61)
Status of specification	Full
Information required
Chemical name	4-Mercapto-4-methyl-2-pentanone
JECFA number	1293
CAS number	19872-52-7
FEMA number	3997
COE number
FLAVIS number	12.169
Molecular weight	132.23
Chemical formula	C6H12OS
Physical form/odour	colourless to pale yellow liquid; roasted meaty aroma
Solubility	Soluble in water; Insoluble in fat
Solubility in ethanol	partially soluble
Boiling point (°C)	47-49° (15 mm Hg)
Assay min %	48%
Acid value max
Refractive index	1.431-1.437
Specific gravity	1.032-1.037
Other requirements	SC: 4-methyl-3-penten-2-one; supplied as a 1% solution in propylene glycol
ID Test	HNMR IR MS
Spectrum