(e)-1-(2,6,6-Trimethyl-2-Cyclohexen-1-Yl)-2-Buten-1-One
Aroma Chemical Heart Note CAS 24720-09-0
A fruity floral note with a rose character and ripe apple and blackcurrant facets. Soft and natural, it lifts rose and fruity accords.
Odor profile
| Note | Heart Note |
| Descriptor 1 | Floral |
| Descriptor 2 | Rose |
| Descriptor 3 | Apple |
| Tenacity2 | 64 h |
2 Source: The Good Scents Company
Identification
| CAS Number | 24720-09-0 |
| INCI Name | Trans-rose ketone-1 |
| Category | Aroma Chemical |
| Formula | C13H20O |
| Mol. Weight | 192.30 |
| IUPAC Name | (E)-1-(2,6,6-trimethylcyclohex-2-en-1-yl)but-2-en-1-one |
| InChIKey | CRIGTVCBMUKRSL-FNORWQNLSA-N |
Synonyms
trans-2-buten-1-one, 1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, 2-buten-1-one, 1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, (2E)-, 2-buten-1-one, 1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, (E)-, damarose alpha, damarose alpha fab., (E)-alpha-damascone, trans-alpha-damascone, damascone alpha, damascone alpha extra, damascone alpha total, damascone alpha, trans, alpha-damascone synthetic, alpha-damascone with BHT, nature-identical, alpha-damascone with no anti-oxidant, nature-identical, alpha-damascone with tocopherol, nature-identical, finocone alpha, rose ketone alpha, (E)-rose ketone-1, trans-rose ketone-1, (E)-1-(2,6,6-trimethyl-1-cyclohex-2-enyl)but-2-en-1-one, (2E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one, trans-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)but-2-en-1-one, (E)-4-2,6,6-trimethyl-2-cyclohexenyl-2-buten-4-one, (E)-1-(2,6,6-trimethyl-cyclohex-2-enyl)-but-2-en-1-one, (2E)-1-(2,6,6-trimethylcyclohex-2-en-1-yl)but-2-en-1-one, (E)-1-(2,6,6-trimethylcyclohex-2-en-1-yl)but-2-en-1-one, (2E)-1-(2,6,6-trimethylcyclohex-2-enyl)but-2-en-1-one
Physical and chemical data
| Boiling Point | 266.00 °C |
| Density | 0.93700 |
| Refractive Index | 1.49300 |
| Vapor Pressure | 0.008000 mmHg @ 25.00 C. (est) |
| LogP | 3.436 |
| Solubility | alcohol; dipropylene glycol; water, 10.31 mg/L @ 25 C (est) |
| Appearance | colorless to pale yellow clear liquid |
Regulatory status
IFRA maximum concentrations
| Category | Use | Limit in the finished product |
|---|---|---|
| Category 1 | Lip products, toys | 0.0077 % |
| Category 2 | Deodorants, antiperspirants | 0.0023 % |
| Category 3 | Eye products | 0.046 % |
| Category 4 | Fine fragrance | 0.043 % |
| Category 5A | Body lotion | 0.011 % |
| Category 5B | Face cream | 0.011 % |
| Category 5C | Hand cream | 0.011 % |
| Category 5D | Baby creams, oils | 0.011 % |
| Category 6 | Oral care, mouthwash | 0.025 % |
| Category 7A | Rinse-off hair products | 0.088 % |
| Category 7B | Leave-on hair products | 0.088 % |
| Category 8 | Intimate and baby wipes | 0.0045 % |
| Category 9 | Soap, shampoo, rinse-off | 0.084 % |
| Category 10A | Household care, hand contact | 0.30 % |
| Category 10B | Aerosol air fresheners | 0.30 % |
| Category 11A | Intended skin contact | 0.17 % |
| Category 11B | Minimal skin contact | 0.17 % |
| Category 12 | No skin contact, candles | Not restricted |
| IFRA Amendment | 49 |
| Restriction Type | Restriction |
| Critical Effect | Dermal Sensitization |
EU allergen declaration
| Substance | Share |
|---|---|
| Rose Ketones | 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.