Rose oxide
Aroma Chemical Top Note CAS 16409-43-1
Fresh, green rose with a metallic, stem like character and a soft fruity, geranium nuance. Diffusive and penetrating, it gives a natural dewy edge to rose and geranium accords.
Odor profile
| Note | Top Note |
| Descriptor 1 | Floral |
| Descriptor 2 | Rose |
| Descriptor 3 | Geranium |
| Odor Impact1 | 700 |
| Tenacity2 | 8 h |
1 Source: PerfumersWorld
2 Source: The Good Scents Company
Identification
| CAS Number | 16409-43-1 |
| INCI Name | Isobutenyl methyltetrahydropyran |
| Category | Aroma Chemical |
| Formula | C10H18O |
| Mol. Weight | 154.25 |
| IUPAC Name | 4-methyl-2-(2-methylprop-1-enyl)oxane |
| InChIKey | CZCBTSFUTPZVKJ-UHFFFAOYSA-N |
Synonyms
Tetrahydro-4-methyl-2-(2-methylpropen-1-yl)pyran; 2-Isobutenyl-4-methyltetrahydropyran; 2-iso butenyl-4-methyltetrahydropyran; geranium oxyde; 2-(2-methyl prop-1-enyl)-4-methyl tetrahydropyran; 4-methyl-2-(2-methyl-1-propenyl)-tetrahydropyran; 4-methyl-2-(2-methyl-1-propenyl)tetrahydro-2H-pyran; 4-methyl-2-(2-methylprop-1-en-1-yl)tetrahydro-2H-pyran; 4-methyl-2-(2-methylprop-1-enyl)-2H-3,4,5,6-tetrahydropyran; 4-methyl-2-(2-methylprop-1-enyl)oxane; 2-(2-methylprop-1-enyl)-4-methyltetrahydropyran; pyran, 2-(2-methyl-1-propenyl)-4-methyltetrahydro-; pyran, tetrahydro-2-(2-methyl-1-propenyl)-4-methyl-; 2H-pyran, tetrahydro-4-methyl-2-(2-methyl-1-propen-1-yl)-; 2H-pyran, tetrahydro-4-methyl-2-(2-methyl-1-propenyl)-; pyran, tetrahydro-4-methyl-2-(2-methylpropenyl)-; (+)-rose oxide; cis-rose oxide; rose oxide 70; rose oxide 70/30; rose oxide 90; rose oxide 90/10; rose oxide BRI; rose oxide CO; rose oxide D; rose oxide d,l 70:30; rose oxide d,l 90:10; rose oxide dextro; rose oxide highcis; rose oxide inactive; rose oxide inactive high cis; rose oxide laevo; rose oxide natural; rose oxide racemic; rosenoxide; rosoxide
Physical and chemical data
| Boiling Point | 86 °C @ 20 mmHg |
| Flash Point | 69.44 °C |
| Density | 0.873 |
| Refractive Index | 1.453 |
| Vapor Pressure | 0.551000 mmHg @ 25.00 C. (est) |
| LogP | 2.9 |
| Solubility | Slightly soluble in water; soluble in oils |
| Appearance | Liquid |
Regulatory status
EU allergen declaration
| Substance | Share |
|---|---|
| Citronellol | 1 % |
| Citral | 0.035 % |
| Geraniol | 0.006 % |
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.