Isoraldeine 95
Aroma Chemical Base Note CAS 1335-46-2
Powdery violet and orris with a dry, woody character and a soft leathery facet, leaning more leathery than the higher grade. It builds violet, leather and tea accords.
Odor profile
| Note | Base Note |
| Descriptor 1 | Floral |
| Descriptor 2 | Violet |
| Descriptor 3 | Woody |
| Odor Impact1 | 100 |
| Tenacity1 | 184 h |
| Tenacity2 | 184 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 | 1335-46-2 |
| INCI Name | Methyl alpha-ionone isomers |
| Category | Aroma Chemical |
| Formula | C14H22O |
| Mol. Weight | 206.32 |
| IUPAC Name | (E)-1-(2,6,6-trimethylcyclohex-2-en-1-yl)pent-1-en-3-one |
| InChIKey | VPKMGDRERYMTJX-CMDGGOBGSA-N |
Synonyms
Methyl ionone (mixture of isomers), Isoraldeine 70, Ionone, methyl-, Methylionone, alpha-methyl ionone, Methyl ionone, alpha-Cetone, (E)-1-(2,6,6-trimethylcyclohex-2-en-1-yl)pent-1-en-3-one, 1-(2,6,6-trimethylcyclohex-2-en-1-yl)pent-1-en-3-one, Methyl-alpha-ionone, 1-Penten-3-one, 1-(2, 6, 6-Trimethyl-2-cyclohexen-1-yl)-, 5-(2,6,6-Trimethyl-2-cyclohexenyl)-4-penten-3-one, alpha-Methylionone, cyclocitrylidene methyl ethyl ketone, iralia total (Firmenich), methyl alpha-ionone isomers, methyl cyclocitrilydene acetone, N-methyl ionone, 1-penten-3-one, 1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, N-, iso raldeine 70 (Givaudan), iso raldeine 95 (Givaudan), 1-(2,6,6-trimethyl-1-cyclohex-2-enyl)pent-1-en-3-one N-, 5-(2,6,6-trimethyl-2-cyclohexen-1-yl)-4-penten-3-one N-
Physical and chemical data
| Boiling Point | 285.11 °C |
| Flash Point | 120.00 °C |
| Density | 0.921 |
| Refractive Index | 1.498 |
| Vapor Pressure | 0.003000 mmHg @ 25.00 C. (est) |
| LogP | 3.4 |
| Solubility | alcohol; water, 2.98 mg/L @ 25 C (est); APC: - |
| Appearance | CBI; Liquid |
Regulatory status
IFRA maximum concentrations
| Category | Use | Limit in the finished product |
|---|---|---|
| Category 1 | Lip products, toys | 5.4 % |
| Category 2 | Deodorants, antiperspirants | 1.6 % |
| Category 3 | Eye products | 32 % |
| Category 4 | Fine fragrance | 30 % |
| Category 5A | Body lotion | 7.6 % |
| Category 5B | Face cream | 7.6 % |
| Category 5C | Hand cream | 7.6 % |
| Category 5D | Baby creams, oils | 7.6 % |
| Category 6 | Oral care, mouthwash | 18 % |
| Category 7A | Rinse-off hair products | 61 % |
| Category 7B | Leave-on hair products | 61 % |
| Category 8 | Intimate and baby wipes | 3.2 % |
| Category 9 | Soap, shampoo, rinse-off | 59 % |
| Category 10A | Household care, hand contact | 100 % |
| Category 10B | Aerosol air fresheners | 100 % |
| Category 11A | Intended skin contact | 100 % |
| Category 11B | Minimal skin contact | 100 % |
| Category 12 | No skin contact, candles | Not restricted |
| IFRA Amendment | 49 |
| Restriction Type | Restriction / Specification |
| Critical Effect | Dermal Sensitization |
| Specification | Pseudo methyl ionones (CAS numbers 26651-96- 7, 72968-25-3, 1117-41-5) should not be used as fragrance ingredient as such. A level of up to 2% of Pseudo methyl ionones as an impurity in Methyl ionones is accepted. Page 189 of 709 Amendment 49 Methyl ionone, mixed isomers 2020 (Amendment 49) 3/4 IFRA STANDARD |
EU allergen declaration
| Substance | Share |
|---|---|
| Alpha-Isomethyl ionone | 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.