Food safety and quality
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Flavouring |
2-Mercaptopropionic acid |
Synonym(s) |
2-Thiolpropionic acid;Thiolactic acid;alpha-Mercaptopropanoic acid |
Latest JECFA evaluation |
2002 (Session 59) |
Status of specification |
Full |
Information required |
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Chemical name |
2-Mercaptopropionic acid |
JECFA number |
551 |
CAS number |
79-42-5 |
FEMA number |
3180 |
COE number |
11790 |
FLAVIS number |
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Molecular weight |
106.16 |
Chemical formula |
C3H6O2S |
Physical form/odour |
colourless to pale yellow liquid with roasted, meaty odour |
Solubility |
miscible in water, alcohol, ether and acetone |
Solubility in ethanol |
1 mL in 1 mL 95% alcohol |
Boiling point (°C) |
117° |
Assay min % |
95% |
Acid value max |
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Refractive index |
1.479-1.484 |
Specific gravity |
1.192-1.200 |
Other requirements |
mp: 10° |
ID Test |
IR |
Spectrum |
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