Food safety and quality: details

Flavouring	Sodium 3-mercapto-oxopropionate
Synonym(s)	Pyruvic acid, 3-mercapto-, sodium salt;Sodium mercaptopyruvate
Latest JECFA evaluation	1999 (Session 53)
Status of specification	Full
Information required
Chemical name	Sodium 3-mercapto-2-oxopropionate
JECFA number	563
CAS number	10255-67-1
FEMA number	3901
COE number
FLAVIS number
Molecular weight	142.1
Chemical formula	C3H3O3S
Physical form/odour	white, free-flowing powder
Solubility	soluble in water at 200 g/l at 20oC, white petrolatum at <100 g/kg at 20oC
Solubility in ethanol
Boiling point (°C)	467°
Assay min %	97.6%
Acid value max
Refractive index
Specific gravity
Other requirements	Melting Pt.: 183°
ID Test	IR, CNMR, HNMR
Spectrum