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Online Edition: "Specifications for Flavourings"
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| Flavouring |
Methyl mercaptan |
| Synonym(s) |
Mercaptomethane
Methanethiol
Methyl sulfhydrate
Thiomethyl alcohol
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| Latest JECFA evaluation |
2000 (Session 55)
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| Status of specification |
Full |
| Chemical name |
Methanethiol
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| JECFA number |
508 |
| CAS number |
74-93-1
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| FEMA number |
2716
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| COE number |
475
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| FLAVIS number |
-
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| Molecular weight |
48.1 |
| Chemical formula |
CH4S
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| Physical form/odour |
clear liquid (at <6°C) or colourless gas with odour of rotten cabbage or garlic |
| Solubility |
2.4 g/100 ml water; soluble in alcohol, ether, organic solvents |
| Solubility in ethanol |
- |
| Boiling point (°C) |
5.9-6.0 |
| Assay min % |
95 |
| Acid value max |
1.0 |
| Refractive index |
1.430-1.436 (gas); 0.894 (liquid) |
| Specific gravity |
0.862-0.894 (gas); 1.032-1.040 (liquid) |
| Other requirements |
- |
| ID Test |
IR, MS |
| Spectrum |
http://www.fao.org/ag/agn/jecfa-flav/img/img/508-ir.gif
http://www.fao.org/ag/agn/jecfa-flav/img/img/508-ms.gif
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