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Online Edition: "Specifications for Flavourings"
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| Flavouring |
trans-4-Hexenal |
| Synonym(s) |
trans-Hex-4-enal
Hex-4-enal
E-4-Hexenal
4-Hexenal trans
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| Latest JECFA evaluation |
2007 (Session 68)
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| Status of specification |
Full |
| Chemical name |
4(E)-Hexenal
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| JECFA number |
1622 |
| CAS number |
25166-87-4
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| FEMA number |
4046
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| COE number |
-
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| FLAVIS number |
-
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| Molecular weight |
98.14 |
| Chemical formula |
C6H10O
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| Physical form/odour |
Colourless liquid; Green vegetable aroma |
| Solubility |
Soluble in hexane and diethyl ether; insoluble in water |
| Solubility in ethanol |
Soluble |
| Boiling point (°C) |
125-129° |
| Assay min % |
92% (sum of cis and trans isomers) |
| Acid value max |
- |
| Refractive index |
1.417-1.424 |
| Specific gravity |
0.824-0.832 |
| Other requirements |
Contains 76% min trans-4-hexenal, 16-20% cis-4-hexenal, 2-4% 3-hexen-1-ol and 1-2% hexanal |
| ID Test |
IR MS |
| Spectrum |
http://www.fao.org/ag/agn/jecfa-flav/img/jecfa68/1622-ir.gif
http://www.fao.org/ag/agn/jecfa-flav/img/jecfa68/1622-ms.gif
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