Food safety and quality: details

Flavouring	Mixture of 2,5 and 2,7-Dimethyl-6,7-dihydro-5H-cyclopentapyrazine
Synonym(s)
Latest JECFA evaluation	2012 (Session 76)
Status of specification	Full
Information required
Chemical name	2,5-Dimethyl-6,7-dihydro-5H-cyclopenta[b]pyrazine and 2,7-Dimethyl-6,7-dihydro-5H-cyclopenta[b]pyrazine;
JECFA number	2128
CAS number	38917-61-2;38917-62-3
FEMA number	4702
COE number	11310;11309
FLAVIS number	14.098
Molecular weight	148.2
Chemical formula	C9H12N2
Physical form/odour	Colourless to pale yellow liquid; Roasted coffee aroma
Solubility	Practically insoluble to insoluble in water
Solubility in ethanol	Soluble
Boiling point (°C)	230-231°
Assay min %	95%
Acid value max
Refractive index	1.524-1.532
Specific gravity	1.020-1.030
Other requirements	2,5-isomer (60-75%); 2,7-isomer (35-40%)
ID Test	MS IR HNMR
Spectrum