Food safety and quality
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Flavouring |
3-Mercapto-2-butanone |
Synonym(s) |
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Latest JECFA evaluation |
2000 (Session 55) |
Status of specification |
Full |
Information required |
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Chemical name |
3-Mercapto-2-butanone |
JECFA number |
558 |
CAS number |
40789-98-8 |
FEMA number |
3298 |
COE number |
11497 |
FLAVIS number |
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Molecular weight |
104.17 |
Chemical formula |
C4H8OS |
Physical form/odour |
colourless or pale yellow liquid, becomes cloudy after short storage |
Solubility |
slightly soluble in water; soluble in alcohol, ether, pyridine and aqueous alkalis |
Solubility in ethanol |
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Boiling point (°C) |
50° (18 mm Hg) |
Assay min % |
99% |
Acid value max |
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Refractive index |
1.469-1.479 |
Specific gravity |
1.016 (20°) |
Other requirements |
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ID Test |
IR |
Spectrum |
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