Thymol
| Names | |
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| Preferred IUPAC name
5-Methyl-2-(propan-2-yl)phenol | |
| Systematic IUPAC name
5-Methyl-2-(propan-2-yl)benzenol | |
| Other names
2-Isopropyl-5-methylphenol, isopropyl-m-cresol, 1-methyl-3-hydroxy-4-isopropylbenzene, 3-methyl-6-isopropylphenol, 5-methyl-2-(1-methylethyl)phenol, 5-methyl-2-isopropyl-1-phenol, 5-methyl-2-isopropylphenol, 6-isopropyl-3-methylphenol, 6-isopropyl-m-cresol, Apiguard, NSC 11215, NSC 47821, NSC 49142, thyme camphor, m-thymol, and p-cymen-3-ol
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| Identifiers | |
3D model (JSmol)
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| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| DrugBank | |
| ECHA InfoCard | 100.001.768 |
| EC Number |
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| KEGG | |
PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| C10H14O | |
| Molar mass | 150.221 g·mol−1 |
| Density | 0.96 g/cm3 |
| Melting point | 49 to 51 °C (120 to 124 °F; 322 to 324 K) |
| Boiling point | 232 °C (450 °F; 505 K) |
| 0.9 g/L (20 °C) | |
Refractive index (nD)
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1.5208 |
| Pharmacology | |
| QP53AX22 (WHO) | |
| Hazards | |
| GHS labelling: | |
| Warning | |
| H302, H314, H411 | |
| P260, P264, P270, P273, P280, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P330, P363, P391, P405, P501 | |
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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Thymol (also known as 2-isopropyl-5-methylphenol, IPMP), C10H14O, is a monoterpenoid, phenol derivative of p-cymene, isomeric with carvacrol. It occurs naturally in oil of thyme and is extracted from Thymus vulgaris (common thyme), ajwain, and various other plants, as a white crystalline substance with a pleasant aromatic odor.
Thymol provides the distinctive flavor of the culinary herb thyme, also produced from T. vulgaris. Thymol is only slightly soluble in water at neutral pH, but due to deprotonation of the phenol, it is highly soluble in alcohols, other organic solvents, and strongly alkaline aqueous solutions.