Isoeugenol
Aroma Chemical Heart Note CAS 97-54-1
A sweet spicy clove note with a rich carnation floralcy and a soft woody phenolic facet. Warm and rounded, it is a key material for carnation and oriental accords.
Odor profile
| Note | Heart Note |
| Descriptor 1 | Spicy |
| Descriptor 2 | Clove |
| Descriptor 3 | Floral |
| Odor Impact1 | 85 |
| Impact Level | Medium |
| Tenacity1 | 60 h |
| Tenacity2 | 400 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 | 97-54-1 |
| INCI Name | Isoeugenol |
| Category | Aroma Chemical |
| Formula | C10H12O2 |
| Mol. Weight | 164.20 |
| IUPAC Name | 2-methoxy-4-[(E)-prop-1-enyl]phenol |
| InChIKey | BJIOGJUNALELMI-ONEGZZNKSA-N |
Synonyms
Methoxy-4-hydroxy-1-propen-1-yl Benzene, hydroxy-3-methoxy-1-propen-1-yl Benzene, Propenyl Guaiacol, 2-methoxy-4-(1-propenyl)phenol, Methoxy-4-(1-propenyl)phenol, iso eugenol 6504, iso eugenol fab, iso eugenol natural, iso eugenol natural derivative, 4-hydroxy-3-methoxy-1-propen-1-yl benzene, 4-hydroxy-3-methoxy-1-propenyl benzene, 4-hydroxy-3-methoxypropenyl benzene, 2-methoxy-4-(1-methylethenyl)phenol, 2-methoxy-4-(1-methylvinyl)phenol, 2-methoxy-4-(1-propenyl) phenol, 3-methoxy-4-hydroxy-1-propen-1-yl benzene, 1-(3-methoxy-4-hydroxyphenyl)-1-propane, 2-methoxy-4-prop-1-en-2-yl-phenol, 2-methoxy-4-prop-1-en-2-ylphenol, 2-methoxy-4-propenyl phenol, 4-propenyl guaiacol
Physical and chemical data
| Boiling Point | 266.1 °C |
| Melting Point | -10.0 °C |
| Flash Point | 112.8 °C |
| Density | 1.08 |
| Refractive Index | 1.5739 |
| Vapor Pressure | 0.02 mmHg at 77 °F (NTP, 1992) |
| LogP | 2.6 |
| Solubility | In water, 810 mg/L at 25 °C |
| Appearance | Isoeugenol is a pale yellow oily liquid with a spice-clove odor. Freezes at 14 °F. Density 1.08 g / cm3. Occurs in ylang-ylang oil and other essential oils. |
Regulatory status
IFRA maximum concentrations
| Category | Use | Limit in the finished product |
|---|---|---|
| Category 1 | Lip products, toys | 0.019 % |
| Category 2 | Deodorants, antiperspirants | 0.0057 % |
| Category 3 | Eye products | 0.12 % |
| Category 4 | Fine fragrance | 0.11 % |
| Category 5A | Body lotion | 0.027 % |
| Category 5B | Face cream | 0.027 % |
| Category 5C | Hand cream | 0.027 % |
| Category 5D | Baby creams, oils | 0.0090 % |
| Category 6 | Oral care, mouthwash | 0.063 % |
| Category 7A | Rinse-off hair products | 0.22 % |
| Category 7B | Leave-on hair products | 0.22 % |
| Category 8 | Intimate and baby wipes | 0.0090 % |
| Category 9 | Soap, shampoo, rinse-off | 0.21 % |
| Category 10A | Household care, hand contact | 0.21 % |
| Category 10B | Aerosol air fresheners | 0.75 % |
| Category 11A | Intended skin contact | 0.0090 % |
| Category 11B | Minimal skin contact | 0.0090 % |
| Category 12 | No skin contact, candles | Not restricted |
| IFRA Amendment | 49 |
| Restriction Type | Restriction |
| Critical Effect | Dermal Sensitization And Systemic Toxicity |
EU allergen declaration
| Substance | Share |
|---|---|
| Isoeugenol | 100 % |
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.