Indole (a blending of the terms indigo and oleum) is an organic compound. The chemical can be found in many places in nature. It can be produced by bacteria. At room temperature, indole is a solid.
Quick facts Names, Identifiers ...
Indole
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| Names |
| Preferred IUPAC name
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| Other names
2,3-Benzopyrrole, ketole,
1-benzazole |
| Identifiers |
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3D model (JSmol) |
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| 3DMet |
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| Beilstein Reference |
107693 |
| ChEBI |
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| ChEMBL |
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| ChemSpider |
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| DrugBank |
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| ECHA InfoCard |
100.004.019 |
| EC Number |
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| Gmelin Reference |
3477 |
| KEGG |
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| RTECS number |
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| UNII |
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| Properties |
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C8H7N |
| Molar mass |
117.15 g·mol−1 |
| Appearance |
White solid |
| Odor |
Feces or jasmine like |
| Density |
1.1747 g/cm3, solid |
| Melting point |
52 to 54 °C (126 to 129 °F; 325 to 327 K) |
| Boiling point |
253 to 254 °C (487 to 489 °F; 526 to 527 K) |
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0.19 g/100 ml (20 °C)
Soluble in hot water |
| Acidity (pKa) |
16.2
(21.0 in DMSO) |
| Basicity (pKb) |
17.6 |
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-85.0·10−6 cm3/mol |
| Structure |
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Pna21 |
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Planar |
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2.11 D in benzene |
| Hazards |
| Main hazards |
Skin sensitising |
| Related compounds |
| Other cations |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
| Infobox references |
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Close
Indole is found in some vegetables. They include broccoli, cauliflower and cabbage.[2] It is also in human feces. It has a strong fecal odor. In low concentration indole has a flowery smell. Indole is in perfumes.[3]
