Food safety and quality: details

Flavouring	(3, 5 or 6)-Methylthio-2-methylpyrazine
Synonym(s)	2-Methyl-3,5-or 6-methylthiopyrazine;Methylpyrazinyl methyl sulfides (mixture)
Latest JECFA evaluation	2001 (Session 57)
Status of specification	Full
Information required
Chemical name	Mixture of 2-Methyl-3-(methylthio)pyrazine and 2-Methyl-5-(methylthio)pyrazine and 2-Methyl-6-(methylthio)pyrazine
JECFA number	797
CAS number	67952-65-2;2882-20-4;2884-14-2;2884-13-1
FEMA number	3208
COE number	2290
FLAVIS number
Molecular weight	140.21
Chemical formula	C6H8N2S
Physical form/odour	colourless to light yellow liquid with a cooked meat, roasted, almond, nutty, vegetable odour
Solubility	miscible at room temperature
Solubility in ethanol	miscible at room temperature
Boiling point (°C)	85-87° (10 mm Hg)
Assay min %	99% (sum of isomers)
Acid value max
Refractive index	1.570-1.590
Specific gravity	1.133-1.153
Other requirements
ID Test	IR
Spectrum