Trans-Anethole
Aroma Chemical Heart Note CAS 4180-23-8
A sweet anise note with a warm licorice character and a cooling spicy edge. It is the main odour principle of aniseed and suits spicy and gourmand accords.
Odor profile
| Note | Heart Note |
| Descriptor 1 | Herbal |
| Descriptor 2 | Anisic |
| Descriptor 3 | Spicy |
| Odor Impact1 | 120 |
| Tenacity1 | 25 h |
| Tenacity2 | 20 h |
1 Source: PerfumersWorld
2 Source: The Good Scents Company
Both tenacity figures are blotter life. The two labs use different evaluation protocols, so the numbers are not directly comparable — read them as two independent readings, not as a contradiction.
Identification
| CAS Number | 4180-23-8 |
| INCI Name | Anethol |
| Category | Aroma Chemical |
| Formula | C10H12O |
| Mol. Weight | 148.20 |
| IUPAC Name | 1-methoxy-4-[(E)-prop-1-enyl]benzene |
| InChIKey | RUVINXPYWBROJD-ONEGZZNKSA-N |
Synonyms
Anethole, Anise camphor, trans Anethole, cis-Anethole, 1-methoxy-4-propenyl benzene, Methoxy-alpha-phenyl Propene, P, Methoxy-1-propenyl benzene, Propene, 1-(4-methoxyphenyl), iso-Estragole, (E)-p-Propenylanisole, p-Propenylphenyl methyl ether para Propenyl phenyl methylether, para Propenyl anisole, 1-Methoxy-4-propenylbenzene, para Methoxy alpha phenylpropene, Metanethole, iso Estragole, 4-Dimethoxy stilbene, trans-acintene O, (E)-anethol, trans-anethol, (E)-anethol (natural), trans-anethol 21/22, anethol 21/22 FCC, trans-anethol 21/22 FCC, anethol 21/22 natural, anethol B21 (ex star anise), anethol de synthese, anethol extra USP, anethol nat ex star anise oil, (E)-anethol natural, anethol supra 21.5, anethol synthetic, anethol USP, (E)-anethole, trans-p-anethole, trans-para-anethole, anethole (99.5%), anethole (natural)
Physical and chemical data
| Boiling Point | 234.5 °C |
| Melting Point | 21.3 °C |
| Flash Point | 90.6 °C |
| Density | 0.9882 |
| Refractive Index | 1.559 |
| Vapor Pressure | 0.05 [mmHg] |
| LogP | 3.3 |
| Solubility | ALMOST WATER INSOL; MISCIBLE WITH CHLOROFORM & ETHER |
| Appearance | Anethole appears as white crystals or a liquid. Odor of anise oil and a sweet taste. (NTP, 1992) |
Regulatory status
Restricted components
| Component | Share |
|---|---|
| Methyl Chavicol | 0.19 % |
| Linalool | 0.0012 % |
| Geraniol | 0.001 % |
IFRA regulated substances contained in this material. The interactive index derives the effective maximum concentration per category from them.
EU allergen declaration
| Substance | Share |
|---|---|
| Beta-Carophyllene | 0.046 % |
| Terpineol | 0.002 % |
| Linalool | 0.0012 % |
| Geraniol | 0.001 % |
Substances that must be named in the ingredient list under Annex III of Regulation (EC) 1223/2009, as amended by Regulation (EU) 2023/1545. Where a range was given, the upper bound is shown.
All figures on this page are guide values collected from public reference works and supplier declarations. They differ between batches, origins and qualities. The data sheet of your own supplier is always the authoritative document for the material you actually use.