2-Methyl-4-(2,6,6-Trimethylcyclohex-1-En-1-Yl)-2-Butenal
Aroma Chemical Base Note CAS 3155-71-3
A dry sweet note with a tobacco and violet character and a soft hay facet. Woody and natural, it adds a leafy boronia depth to compositions.
Odor profile
| Note | Base Note |
| Descriptor 1 | Floral |
| Descriptor 2 | Violet |
| Descriptor 3 | Osmanthus |
| Impact Level | Medium |
| Tenacity2 | 236 h |
2 Source: The Good Scents Company
Identification
| CAS Number | 3155-71-3 |
| INCI Name | 2-methyl-4-(2,6,6-trimethyl-1-cyclohexenyl)-2-butenal |
| Category | Aroma Chemical |
| Formula | C14H22O |
| Mol. Weight | 206.32 |
| IUPAC Name | 2-methyl-4-(2,6,6-trimethylcyclohexen-1-yl)but-2-enal |
| InChIKey | FJCQUJKUMKZEMH-UHFFFAOYSA-N |
Synonyms
boronal (Symrise), boronia butenal, 2-butenal, 2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, (E)-, C14 ional, coronal beta, 2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-buten-1-al, (2E)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-butenal, 2-methyl-4-(2,6,6-trimethyl-1-cyclohexenyl)-2-butenal, (E)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexenyl)but-2-enal, (E)-2-methyl-4-(2,6,6-trimethyl-cyclohex-1-enyl)-but-2-enal, (E)-2-methyl-4-(2,6,6-trimethylcyclohex-1-en-1-yl)but-2-enal
Physical and chemical data
| Boiling Point | 296.00 °C |
| Density | 0.93900 |
| Refractive Index | 1.50700 |
| Vapor Pressure | 0.001000 mmHg @ 25.00 C. (est) |
| LogP | 4.054 |
| Solubility | alcohol; water, 1.354 mg/L @ 25 C (est) |
| Appearance | pale yellow to yellow clear oily liquid |
Regulatory status
IFRA maximum concentrations
| Category | Use | Limit in the finished product |
|---|---|---|
| Category 1 | Lip products, toys | 0.22 % |
| Category 2 | Deodorants, antiperspirants | 0.066 % |
| Category 3 | Eye products | 1.3 % |
| Category 4 | Fine fragrance | 1.2 % |
| Category 5A | Body lotion | 0.32 % |
| Category 5B | Face cream | 0.32 % |
| Category 5C | Hand cream | 0.32 % |
| Category 5D | Baby creams, oils | 0.32 % |
| Category 6 | Oral care, mouthwash | 0.73 % |
| Category 7A | Rinse-off hair products | 2.5 % |
| Category 7B | Leave-on hair products | 2.5 % |
| Category 8 | Intimate and baby wipes | 0.13 % |
| Category 9 | Soap, shampoo, rinse-off | 2.4 % |
| Category 10A | Household care, hand contact | 8.7 % |
| Category 10B | Aerosol air fresheners | 8.7 % |
| Category 11A | Intended skin contact | 4.8 % |
| Category 11B | Minimal skin contact | 4.8 % |
| Category 12 | No skin contact, candles | 100 % |
| IFRA Amendment | 52 |
| Restriction Type | Restriction |
| Critical Effect | Dermal Sensitization |
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.