| 2-Undecanone | |
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Undecan-2-one |
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Other names
Methyl nonyl ketone (MNK) |
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| Identifiers | |
| CAS number | 112-12-9 |
| ChemSpider | 7871 |
| UNII | YV5DSO8CY9 |
| DrugBank | DB08688 |
| KEGG | C01875 |
| ChEBI | CHEBI:17700 |
| RTECS number | YQ2820000 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C11H22O |
| Molar mass | 170.29 g mol−1 |
| Appearance | Colorless or pale yellow liquid |
| Density | 0.829 g/cm³, liquid |
| Melting point |
15 °C, 288 K, 59 °F |
| Boiling point |
231 °C, 504 K, 448 °F |
| Solubility in water | 0.00179 g/100 mL (25 °C) |
| Hazards | |
| MSDS | External MSDS |
| EU classification | Flammable (F) Irritant (Xi) |
| R-phrases | R50 R51 |
| S-phrases | S23 S24 S25 |
| NFPA 704 |
2
1
0
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| Flash point | 88 °C |
| Related compounds | |
| Related Ketones | Acetone Butan-2-one 3-pentanone |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
2-Undecanone, also known as methyl nonyl ketone and IBI-246, is an oily organic liquid manufactured synthetically, but which can also be extracted from oil of rue. It is found naturally in bananas, cloves, ginger, guava, strawberries, wild-grown tomatoes, and the perennial Houttuynia cordata.[1]
Contents |
2-Undecanone is used in the perfumery and flavoring industries, but because of its strong odor it is primarily used as an insect repellent or animal repellent. Typically, 1–2% concentrations of 2-undecanone are found in dog and cat repellents in the form of a liquid, aerosol spray, or gel.
Research from North Carolina State University has shown that it may be useful as a mosquito repellent, as effective as, or even more effective than, DEET.[2][3]
2-Undecanone is a ketone that is soluble in ethanol, benzene, chloroform, and acetone, but its large carbon chain renders it insoluble in water. Like most methyl ketones, 2-undecanone undergoes a haloform reaction when in the presence of a basic solution of hypochlorite. For example, the reaction between 2-undecanone and sodium hypochlorite yields sodium decanoate, chloroform, and sodium hydroxide.