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Online Edition: "Specifications for Flavourings"
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| Flavouring |
4-Mercapto-4-methyl-2-pentanone |
| Synonym(s) |
2-Mercapto-2-methylpentan-4-one
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| Latest JECFA evaluation |
2003 (Session 61)
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| Status of specification |
Full |
| Chemical name |
4-Mercapto-4-methyl-2-pentanone
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| JECFA number |
1293 |
| CAS number |
19872-52-7
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| FEMA number |
3997
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| COE number |
-
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| FLAVIS number |
12.169
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| Molecular weight |
132.23 |
| Chemical formula |
C6H12OS
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| Physical form/odour |
colourless to pale yellow liquid; roasted meaty aroma |
| Solubility |
Soluble in water; Insoluble in fat |
| Solubility in ethanol |
partially soluble |
| Boiling point (°C) |
47-49° (15 mm Hg) |
| Assay min % |
48 |
| Acid value max |
- |
| Refractive index |
1.431-1.437 |
| Specific gravity |
1.032-1.037 |
| Other requirements |
SC: 4-methyl-3-penten-2-one; supplied as a 1% solution in propylene glycol |
| ID Test |
HNMR IR MS |
| Spectrum |
http://www.fao.org/ag/agn/jecfa-flav/img/img/1293-hnmr.gif
http://www.fao.org/ag/agn/jecfa-flav/img/img/1293-ir.gif
http://www.fao.org/ag/agn/jecfa-flav/img/img/1293-ms.gif
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