Lyral
Aroma Chemical Base Note CAS 31906-04-4
A soft delicate floral note with a muguet lily character and a cyclamen facet. Tenacious and radiant, it is a classic lily of the valley material with a soft woody undertone.
Odor profile
| Note | Base Note |
| Descriptor 1 | Floral |
| Descriptor 2 | Muguet |
| Descriptor 3 | Sweet |
| Odor Impact1 | 25 |
| Impact Level | Medium |
| Tenacity1 | 250 h |
| Tenacity2 | 400 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 | 31906-04-4 |
| INCI Name | Hydroxyisohexyl 3-cyclohexene carboxaldehyde |
| Category | Aroma Chemical |
| Formula | C13H22O2 |
| Mol. Weight | 210.31 |
| IUPAC Name | 4-(4-hydroxy-4-methylpentyl)cyclohex-3-ene-1-carbaldehyde |
| InChIKey | ORMHZBNNECIKOH-UHFFFAOYSA-N |
Synonyms
3 And 4-(4-hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde, 3(4)-(4-Hydroxy-4-methylpentyl)cyclohex-3-ene-1-carbaldehyde, 3(4)-(4-Hydroxy-isohexyl)tetrahydrobenzaldehyde, Hydroxiff (base, Hydroxyempetal, Kovanol, Lyral 4-(4-Methyl-4-hydroxyamyl)-4-cyclohexene carboxaldehyde, 4-(4-Methyl-4-hydroxyamyl)-3-cyclohexene carboxaldehyde, 4(4-Hydroxy-4-methyl pentyl)-3-cyc1ohexene-10-carboxaldehyde, cyclohexal, 3-cyclohexene-1-carboxaldehyde, 4-(4-hydroxy-4-methylpentyl)-, 3 and 4-(4-hydroxy-4-methyl pentyl) cyclohex-3-ene-1-carbaldehyde, 4-(4-hydroxy-4-methyl pentyl) cyclohex-3-ene-1-carbaldehyde, 3 and 4-(4-hydroxy-4-methyl pentyl)-3-cyclohexene-1-carboxaldehyde, 4-(4-hydroxy-4-methyl pentyl)-3-cyclohexene-1-carboxaldehyde, 4-(4-hydroxy-4-methylpentyl)-1-cyclohex-3-enecarboxaldehyde, 4-(4-hydroxy-4-methylpentyl)-3-cyclohexene-1-carbaldehyde, 4-(4-hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde, 4-(4-hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehye, 4-(4-hydroxy-4-methylpentyl)cyclohex-3-ene carbaldehyde, 3 and 4-(4-hydroxy-4-methylpentyl)cyclohex-3-ene-1-carbaldehyde, 4-(4-hydroxy-4-methylpentyl)cyclohex-3-ene-1-carbaldehyde, 4-(4-hydroxy-4-methylpentyl)cyclohex-3-enecarbaldehyde, hydroxyisohexyl 3-cyclohexene carboxaldehyde, 4,4-hydroxymethyl pentyl cyclohexene carbaldehyde, kovanol (Takasago), kovyral, landolal, lanyral, leerall, lydoucal (A.C.S. International), lyral (IFF), lysinal, mugonal
Physical and chemical data
| Boiling Point | 318.65 °C |
| Flash Point | 93.33 °C |
| Density | 0.98900 |
| Refractive Index | 1.48600 |
| Vapor Pressure | 0.000029 mmHg @ 25.00 C. (est) |
| LogP | 1.7 |
| Solubility | alcohol; water, very slightly; water, 184.6 mg/L @ 25 C (est) |
| Appearance | CBI; Liquid |
Regulatory status
IFRA maximum concentrations
| Category | Use | Limit in the finished product |
|---|---|---|
| Category 1 | Lip products, toys | 0.020 % |
| Category 2 | Deodorants, antiperspirants | 0.020 % |
| Category 3 | Eye products | 0.10 % |
| Category 4 | Fine fragrance | 0.20 % |
| Category 5A | Body lotion | 0.20 % |
| Category 5B | Face cream | 0.20 % |
| Category 5C | Hand cream | 0.20 % |
| Category 5D | Baby creams, oils | 0.067 % |
| Category 6 | Oral care, mouthwash | 0.20 % |
| Category 7A | Rinse-off hair products | 0.020 % |
| Category 7B | Leave-on hair products | 0.020 % |
| Category 8 | Intimate and baby wipes | 0.067 % |
| Category 9 | Soap, shampoo, rinse-off | 0.20 % |
| Category 10A | Household care, hand contact | 0.20 % |
| Category 10B | Aerosol air fresheners | 0.20 % |
| Category 11A | Intended skin contact | 0.067 % |
| Category 11B | Minimal skin contact | 0.067 % |
| Category 12 | No skin contact, candles | 91 % |
| IFRA Amendment | 49 |
| Restriction Type | Restriction |
| Critical Effect | Dermal Sensitization And Systemic Toxicity |
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.