Food safety and quality
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Flavouring |
Methyl thiobutyrate |
Synonym(s) |
Methylthiol n-butyrate |
Latest JECFA evaluation |
2000 (Session 55) |
Status of specification |
Full |
Information required |
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Chemical name |
S-Methyl butanethioate |
JECFA number |
484 |
CAS number |
2432-51-1 |
FEMA number |
3310 |
COE number |
2328 |
FLAVIS number |
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Molecular weight |
118.19 |
Chemical formula |
C5H10OS |
Physical form/odour |
colourless to pale yellow liquid with putrid, rancid, sour, pungent cabbage odour (powerful sweet cheesy odour in dilute solution) |
Solubility |
insoluble in water; miscible in diethyl ether |
Solubility in ethanol |
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Boiling point (°C) |
140-143°; 38-40v (12 mm Hg) |
Assay min % |
98% |
Acid value max |
1 |
Refractive index |
1.457-1.469 |
Specific gravity |
0.960-0.975 |
Other requirements |
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ID Test |
IR |
Spectrum |

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