Alpha Damascone
Aroma Chemical Heart Note CAS 43052-87-5
Diffusive rose with a fruity plum and prune character and a soft green, spicy facet. Very powerful, it boosts and adds naturalness to rose and fruity floral accords.
Odor profile
| Note | Heart Note |
| Descriptor 1 | Floral |
| Descriptor 2 | Sweet |
| Descriptor 3 | Berry |
| Odor Impact1 | 700 |
| Tenacity1 | 150 h |
| Tenacity2 | 66 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 | 43052-87-5 |
| INCI Name | Cis -rose ketone-1 (see note 16) (z)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one (cis-alpha-damascone) |
| Category | Aroma Chemical |
| Formula | C13H20O |
| Mol. Weight | 192.30 |
| IUPAC Name | 1-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-1-one |
| InChIKey | GCGZDUFEEQNVPR-UHFFFAOYSA-N |
Synonyms
(E/Z)-Alpha Damascone, Alpha-1-(2, 6-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one, 4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-4-one, 2-Butenone-1,1-(2,6,6-trimethyl-2-cyclohexenyl), alpha-Damascone, Trans/cis-alpha-damascone, (E/Z)-Alpha-damascone, 2-buten-1-one, 1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, damarose alpha, damascone (alpha), dihydro floriffone A, 1-(2,6,6-trimethyl-1-cyclohex-2-enyl)but-3-en-1-one, 1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-butenone, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-but-2-en-4-one, 1-(2,6,6-trimethyl-2-cyclohexenyl)-2-buten-1-one, 4-(2,6,6-trimethyl-2-cyclohexenyl)-2-buten-4-one, 4-(2,6,6-trimethyl-2-cyclohexenyl)-2-butene-4-one, 1-(2,6,6-trimethyl-cyclohex-2-enyl)-but-2-en-1-one, 1-(2,6,6-trimethylcyclohex-2-en-1-yl)but-2-en-1-one
Physical and chemical data
| Boiling Point | 267.13 °C |
| Density | 0.928 |
| Refractive Index | 1.492 |
| Vapor Pressure | 0.008000 mmHg @ 25.00 C. (est) |
| LogP | 3.2 |
| Solubility | 1 ml in 10 ml 95% alcohol (in ethanol) |
| Appearance | colourless to pale yellow liquid with a fruity floral odour |
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 |
|---|---|
| Cis -rose ketone-1 (see note 16) (z)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one (cis-alpha-damascone) | 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.