Cyclamen Aldehyde (CAS 103-95-7) — Floral Heart Note Fragrance Ingredient
Cyclamen Aldehyde
CAS 103-95-7
What Is Cyclamen Aldehyde?
Cyclamen Aldehyde is a synthetic fragrance ingredient commonly found in floral perfumes, soaps, and household products. It contributes a fresh, green floralcy reminiscent of lily-of-the-valley and cyclamen flowers. This versatile molecule helps create modern floral bouquets while adding diffusion and lift to fragrance compositions.
Safety Profile
USE WITH AWARENESS
What Does Cyclamen Aldehyde Smell Like?
Cyclamen Aldehyde opens with a crisp, dewy greenness like crushed stems, evolving into a radiant floral heart reminiscent of lily-of-the-valley with a watery freshness. The dry-down reveals a soft powdery muskiness with subtle cucumber-like undertones. Its diffusive character creates an airy floral halo, making it invaluable for modern floral compositions where a clean, transparent floralcy is desired.
Scent Profile
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used as a modern lily-of-the-valley replacer, providing the signature dewy floralcy while improving stability and diffusion compared to natural extracts.
Forms the crisp green floral backbone, balancing tuberose’s creaminess with its refreshing cucumber-floral character.
Provides the transparent floralcy that defines this modern floral, creating an airy freshness throughout the composition.
Used for its watery lilac facet, contributing to the fragrance’s rain-drenched floral impression.
Forms the crisp green-floral core that makes this fragrance simultaneously delicate and radiant.
2D Molecular Structure
SMILES: CC(CC1=CC=C(C=C1)C(C)C)C=O
Chemistry, Properties & Perfumer Guide
The Chemistry
Cyclamen Aldehyde (3-(4-isopropylphenyl)-2-methylpropanal) belongs to the aryl aldehyde class. While not found in nature, it mimics the scent of cyclamen and lily-of-the-valley flowers. Industrially produced via aldol condensation of cuminaldehyde with propionaldehyde, followed by hydrogenation. The commercial material typically contains about 30% of the active aldehyde due to stability considerations, often diluted in DEP or other solvents.
Physical & Chemical Properties
| Boiling Point | 270 °C (estimated) |
|---|---|
| Flash Point | >100 °C |
| Appearance | Colorless to pale yellow liquid |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-3% | Up to 5% | Floral compositions, lily accords |
| Soap | 0.5-1% | Up to 2% | Provides stable floralcy |
| Detergents | 0.1-0.5% | Up to 1% | Fresh floral boost |
Classic Accords
+ Lyral + Hedione = Modern Floral
+ Phenyl Ethyl Alcohol = Rosy-Fresh
Tip: Combine with citrus top notes to enhance freshness, or musks to extend its powdery dry-down.
Alternatives & Comparisons
Stronger floralcy with less greenness, used when more pronounced lily character is desired.
Softer, more citrusy floral alternative for delicate compositions.
More intense floralcy with better tenacity for long-lasting effects.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. IFRA, REACH, EU Cosmetics Regulation standards update periodically. Consult current IFRA Standards Library before formulating. Not legal or regulatory advice.
IFRA Status
IFRA 49th Amendment restricts to 11% in leave-on products (Category 1) due to sensitization potential.
EU Allergen Declaration
Not currently listed as an EU allergen.
GHS Classification
H319 Eye irritation
RIFM Assessment
RIFM assessment confirms safe use at current IFRA limits with proper risk management.
Sustainability
As a synthetic material, Cyclamen Aldehyde avoids natural resource depletion. Modern production methods aim to minimize solvent use and energy consumption. Being highly potent reduces the carbon footprint per kilogram of finished product.
Explore Cyclamen Aldehyde
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Industry & Science Data
References
- Bauer et al. (2001). Common Fragrance and Flavor Materials. Wiley-VCH.
- IFRA Standards Library (2021). 49th Amendment. IFRA
- Arctander, S. (1969). Perfume and Flavor Chemicals.
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Mar 2026.
Ingredient Data Sheet
CAS 103-95-7Physical Properties
| Molecular Weight | 190.28 g/mol🔬 PubChem |
| LogP (Octanol-Water) | 3.3🔬 PubChem |
| Boiling Point | 234 °C🔬 EPA CompTox |
| Vapor Pressure | 0.0023 mmHg @ 25°C📊 OPERA |
| Flash Point | 79.5 °C🔬 EPA CompTox |
| Involatility Index | 0.0002💻 Calculated |
| log Kp (skin permeability) | -1.518💻 Calculated |
| SMILES | CC(C)C1=CC=C(C=C1)CC(C)C=O🔬 PubChem |
Volatility & Performance
| Fragrance Note | Base💻 Calculated |
| Volatility Class | Very slow💻 Calculated |
| Persistence Score | 5.1 / 5💻 Calculated |
Odor & Flavor
| Functional Groups | aldehydearomatic💻 RDKit |
| “The commercial product is usually stabilized and adjusted to a suitable aldehyde strength, rarely higher than 95%, often about 70%. It is important that the stabilizer does not contribute to the odor of the aldehyde.”📖 Arctander | |
| 2-Methyl-3-(p-isopropylphenyl)-propionaldehyde has a strong, flowery odor.📖 Fenaroli | |
Flavor Notes (Arctander)
| “Finds some use in flavor compositions, mainly for Citrus and various fruit flavor types. The concentration in the finished product is normally about 0.3 to 1.2 ppm (mere traces).”📖 Arctander |
Sensory Thresholds
| Odor Detection Threshold | 0 ppm📖 van Gemert |
Regulatory Status
| IFRA Listed | Yes — see IFRA Standards for category limits⚖️ IFRA 51 |
| FEMA Number | FEMA 2743⚖️ FEMA GRAS |
| GRAS Status | Generally Recognized as Safe⚖️ FEMA GRAS |
Physical data: PubChem (NIH/NLM), U.S. EPA CompTox Dashboard, EPA OPERA models, RDKit. Odor & flavor: Arctander (Perfume & Flavor Chemicals), Fenaroli's Handbook of Flavor Ingredients, Leffingwell. Thresholds: van Gemert (Compilations of Odour Threshold Values). Regulatory: IFRA Standards 51st, FEMA GRAS. Trade names: Surburg (Common Fragrance & Flavor Materials). All data compiled and cross-referenced for perfumertools.com.
Physicochemical Properties
DTXSID: DTXSID2044769
Physical Properties
| Molecular Weight | 190.286 g/mol🔬 EPA CompTox |
| Density | 0.949 g/cm^3🔬 EPA CTX |
| Boiling Point | 234 °C🔬 EPA CTX |
| Melting Point | 16.77 °C🔬 EPA CTX |
| Flash Point | 79.5 °C🔬 EPA CTX |
| Refractive Index | 1.497 Dimensionless📊 OPERA |
| Molar Volume | 203.032 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 3.644 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 3.644 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 3.644 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 6.35 Log10 unitless📊 OPERA |
| Water Solubility | 0 mol/L🔬 EPA CTX |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.002 mmHg🔬 EPA CTX |
| Viscosity | 5.757 cP📊 OPERA |
| Surface Tension | 32.926 dyn/cm📊 OPERA |
| Thermal Conductivity | 131.754 mW/(m*K)📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 17.07 Ų💻 Computed |
| H-Bond Donors | 0 count💻 Computed |
| H-Bond Acceptors | 1 count💻 Computed |
| Rotatable Bonds | 4 count💻 Computed |
| Aromatic Rings | 1 count💻 Computed |
| Molar Refractivity | 59.398 cm^3/mol📊 OPERA |
| Polarizability | 23.547 Å^3📊 OPERA |
Data Sources:
🔬 EPA Experimental data from U.S. EPA CompTox Chemicals Dashboard & CTX APIs. 📊 OPERA Predicted using EPA's OPERA QSAR models. 💻 Computed Calculated from SMILES using RDKit.
