alpha,alpha-Dimethylphenethyl Formate (CAS 10058-43-2) — Mid Note Fragrance Ingredient
alpha,alpha-Dimethylphenethyl Formate
CAS 10058-43-2
What Is alpha,alpha-Dimethylphenethyl Formate?
alpha,alpha-Dimethylphenethyl Formate (CAS 10058-43-2) is an aroma chemical used as a fragrance and flavour ingredient. Its odour is described as sweet, floral and fruity, placing it within the terpenic family as a mid note with medium volatility. With a molecular weight of 178.2 (formula C11H14O2), it is handled by perfumers as a building block for compositions where a sweet character is desired. The data below is compiled from public chemical and regulatory sources.
Safety Profile
GENERALLY SAFE
What Does alpha,alpha-Dimethylphenethyl Formate Smell Like?
The odour profile of alpha,alpha-Dimethylphenethyl Formate is reported as sweet, floral, fruity, rose, fresh, herbal. The dominant facet is its sweet character, with the remaining notes adding nuance and complexity. As a mid note it contributes to the heart of a fragrance. Perceived intensity and exact character depend on concentration, the carrier and the surrounding accord.
Scent Profile
Profile derived from public odour-descriptor data; relative, not absolute.
Chemistry & Properties
The Chemistry
alpha,alpha-Dimethylphenethyl Formate has the molecular formula C11H14O2 and a molecular weight of 178.2 g/mol. Its canonical SMILES representation is CC(C)(CC1=CC=CC=C1)OC=O. Its reported log P (XLogP) of 2.18 indicates a lipophilic, oil-soluble molecule, which informs how it partitions in a formula. Physical constants below are drawn from PubChem and EPA CompTox public datasets.
Physical & Chemical Properties
| Molecular Weight | 178.2 g/mol |
|---|---|
| Boiling Point | 244.9 °C |
| Melting Point | -13.23 °C |
| Flash Point | 111.7 °C |
| Density | 0.8692 g/cm³ |
| Vapor Pressure | 0.0309 mmHg |
| Water Solubility | 0.0013 g/L |
| XLogP | 2.18 |
Perfumer Guide
Alternatives & Comparisons
Ingredients occupying a similar odour space — useful as substitutes or companions when alpha,alpha-Dimethylphenethyl Formate is unavailable or restricted.
Shares floral, fruity, herbal character — a candidate substitute or companion in the same odour space.
Shares floral, fruity, rose character — a candidate substitute or companion in the same odour space.
Shares floral, fruity, herbal character — a candidate substitute or companion in the same odour space.
Safety & Regulatory
⚠ Regulatory Disclaimer
General reference only. IFRA, REACH and EU Cosmetics Regulation standards update periodically. Consult the current IFRA Standards Library before formulating. Not legal or regulatory advice.
IFRA Status
No IFRA restriction recorded in the data set. This is not a guarantee of unrestricted status — always confirm against the current IFRA Standards Library.
Odour detection threshold (air): 0.06 ppb — a literature-curated value indicating its potency in the vapour phase.
Open alpha,alpha-Dimethylphenethyl Formate in Fragrance Studio (Pro) for the calibrated vapour-pressure curve, the modelled odour-threshold estimate, and the substitute-matching engine across 2,900+ aromachemicals.
References & Sources
- PubChem Compound Summary (NIH) — search by InChIKey
- EPA CompTox Chemicals Dashboard — physicochemical & fate data
- IFRA Standards Library (49th / 51st Amendment)
Data: PubChem (NIH), EPA CompTox, IFRA. Last reviewed: Jun 2026.
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