Food safety and quality: details

Flavouring	2-Oxopentanedioic acid
Synonym(s)	Pentanedioic acid, 2-oxo-;2-Oxopentanedioic acid;2-Oxoglutaric acid;2-Ketoglutaric acid;alpha-Ketoglutaric acid
Latest JECFA evaluation	1999 (Session 53)
Status of specification	Full
Information required
Chemical name	2-Oxopentanedioic acid
JECFA number	634
CAS number	328-50-7
FEMA number	3891
COE number
FLAVIS number
Molecular weight	146.1
Chemical formula	C5H6O5
Physical form/odour	white to pale yellow crystalline powder
Solubility	soluble in water at >1000 g/l at 20�C and petrolatum at <100 g/kg at 20�C
Solubility in ethanol
Boiling point (°C)	323°
Assay min %	99%
Acid value max
Refractive index
Specific gravity
Other requirements	Melting Pt.: 115.3°
ID Test	IR, MS, CNMR
Spectrum