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Online Edition: "Specifications for Flavourings"
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Analytical Methods (Volume 4)
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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