Tetrahydrogeraniol
Aroma Chemical Heart Note CAS 106-21-8
Soft, sweet rose with a clean, slightly metallic character and a faint fatty, aldehydic facet. Smooth and stable, it rounds rose and floral accords.
Odor profile
| Note | Heart Note |
| Descriptor 1 | Floral |
| Descriptor 2 | Rose |
| Descriptor 3 | Citrus |
| Odor Impact1 | 150 |
| Impact Level | Medium |
| Tenacity1 | 3.44 h |
| Tenacity2 | 24 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 | 106-21-8 |
| INCI Name | Dihydrocitronellol |
| Category | Aroma Chemical |
| Formula | C10H22O |
| Mol. Weight | 158.28 |
| IUPAC Name | 3,7-dimethyloctan-1-ol |
| InChIKey | PRNCMAKCNVRZFX-UHFFFAOYSA-N |
Synonyms
3,7-Dimethyl-1-octanol, Tetrahydro geraniol, Rosorcol, Rosidol, Pelargol, D.m.o, 3,7-Dimethyloctanol-1, 2,6-Dimethyloctan-8-ol, Dimethyl octanol, Dihydrocitronellol, Fdo sa1032, citronellol, dihydro-, L-dihydro citronellol, 3,7-dimethyl octan-1-ol, dimethyl octanol FCC, dimethyl octanol PQ, 3,7-dimethyloctan-1-ol, 3,7-dimethyloctanol, geraniol tetrahydride, geraniol, perhydro-, geraniol, tetrahydro-, per hydrogeraniol, octan-1-ol, 3,7-dimethyl-, 1-octanol, 3,7-dimethyl-
Physical and chemical data
| Boiling Point | 215.5 °C |
| Flash Point | 87.78 °C |
| Density | 0.826 |
| Refractive Index | 1.435 |
| Vapor Pressure | 0.039000 mmHg @ 25.00 C. (est) |
| LogP | 3.6 |
| Solubility | soluble in most fixed oils and propylene glycol; insoluble in glycerol |
| Appearance | Liquid |
Regulatory status
Restricted components
| Component | Share |
|---|---|
| Citronellol | 2 % |
| Geraniol | 0.5 % |
| Linalool | 0.1 % |
| Citral | 0.1 % |
IFRA regulated substances contained in this material. The interactive index derives the effective maximum concentration per category from them.
EU allergen declaration
| Substance | Share |
|---|---|
| Citronellol | 2 % |
| Geraniol | 0.5 % |
| Linalool | 0.1 % |
| Citral | 0.1 % |
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.