Isomethyl Beta Ionone
Aroma Chemical CAS 79-89-0
A soft woody note with an ambergris character and a soft orris floral facet. Waxy and natural, it adds a violet woody lift to compositions.
Odor profile
| Descriptor 1 | Floral |
| Descriptor 2 | Violet |
| Descriptor 3 | Powdery |
Identification
| CAS Number | 79-89-0 |
| INCI Name | Isomethyl-beta-ionone |
| Category | Aroma Chemical |
| Formula | C14H22O |
| Mol. Weight | 206.32 |
| IUPAC Name | 3-methyl-4-(2,6,6-trimethylcyclohexen-1-yl)but-3-en-2-one |
| InChIKey | NSSHGPBKKVJJMM-UHFFFAOYSA-N |
Synonyms
Iso-Methyl-Beta-Ionone, 3-buten-2-one, 3-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, delta-iraldeine, beta-iso methyl ionone, delta-methyl ionone (so called), (3E)-3-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-buten-2-one, 3-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-buten-2-one, (E)-3-methyl-4-(2,6,6-trimethyl-1-cyclohexenyl)but-3-en-2-one, gamma-methyl-beta-ionone, iso methyl-beta-ionone, beta-iso methylionone, 4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-methyl-3-buten-2-one, 4-(2,6,6-trimethyl-1-cyclohexenyl)-3-methyl-3-buten-2-one
Physical and chemical data
| Boiling Point | 301.28 °C |
| Melting Point | 62.00 °C |
| Vapor Pressure | 0.001000 mmHg @ 25.00 C. (est) |
| LogP | 4.008 |
| Solubility | alcohol; water, 2.309 mg/L @ 25 C (est); bath foam |
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 |
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.