Diphenyl oxide
Aroma Chemical Heart Note CAS 101-84-8
Strong geranium and rose with a green, metallic character. Powerful and tenacious, it builds rose, geranium and lavender accords and boosts and extends the top.
Odor profile
| Note | Heart Note |
| Descriptor 1 | Floral |
| Descriptor 2 | Sweet |
| Descriptor 3 | Green |
| Odor Impact1 | 700 |
| Tenacity1 | 55 h |
| Tenacity2 | 156 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 | 101-84-8 |
| INCI Name | Diphenyl ether |
| Category | Aroma Chemical |
| Formula | C12H10O |
| Mol. Weight | 170.21 |
| IUPAC Name | phenoxybenzene |
| InChIKey | USIUVYZYUHIAEV-UHFFFAOYSA-N |
Synonyms
Diphenyl ether, Phenyl Ether, Diphenyloxide, Geranium crystals Phenylether, Geranium crystals, Diphenylether, 1,1-oxybis benzene, oxybis benzene, benzene, 1,1-oxybis-, benzene, phenoxy-, 1,1-oxybis( benzene), biphenyl oxide, di phenyl oxide, oxy diphenyl, ether, phenoxybenzene, phenyl oxide, diphenyl
Physical and chemical data
| Boiling Point | 257.9 °C |
| Melting Point | 26.8 °C |
| Flash Point | 115.0 °C |
| Density | 1.0661 |
| Refractive Index | 1.5787 |
| Vapor Pressure | 0.02 mmHg at 77 °F (NIOSH, 2024) |
| LogP | 4.2 |
| Solubility | In water, 18 mg/L at 25 °C |
| Appearance | Diphenyl oxide appears as colorless liquid with a mild pleasant odor. May float or sink in water. Freezing point is 81 °F. (USCG, 1999) |
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.