ALDEHYDE C-11 MOA (CAS: 19009-56-4)
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ALDEHYDE C-11 MOA (CAS: 19009-56-4)
🔍 Summary
Aldehyde C-11 MOA, or 2-Methyldecanal, is a synthetic aliphatic aldehyde widely used in perfumery for its exceptional ability to enhance brightness and impart a luxurious “soapy” character. It brings an immediate sensation of cleanliness, fresh air, and crisp laundry to the top notes of a fragrance composition.
🧾 Chemical Profile
|
Item |
Value |
|
IUPAC Name |
2-Methyldecanal |
|
Trade Names |
Aldehyde C-11 MOA, Methyl Octyl Acetaldehyde |
|
CAS Number |
19009-56-4 |
|
EC Number |
242-844-2 |
|
REACH Registration Number |
01-2120750382-59-0000 |
|
Molecular Formula |
C₁₁H₂₂O |
|
Molecular Weight |
170.29 g/mol |
|
Structural Type |
Branched aliphatic saturated aldehyde |
|
Chemical Family |
Aliphatic Branched Aldehyde |
⚗️ Physical Properties
|
Property |
Value |
|
Physical State |
Clear, colorless liquid |
|
Odor |
Acidic, soapy, waxy, ozonic |
|
Density (20°C) |
0.820–0.830 g/cm³ |
|
Boiling Point |
~170°C at 760 mmHg |
|
Flash Point |
~81°C |
|
Refractive Index (20°C) |
1.4250–1.4350 |
|
Solubility |
Soluble in alcohol; slightly soluble in water (~16 mg/L) |
|
Vapor Pressure (25°C) |
Moderate (est. 0.3–0.5 mmHg) |
|
Stability in Formulations |
Excellent in anhydrous compositions |
🌸 Olfactory Profile
Aldehyde C-11 MOA exhibits a distinctive olfactory character:
- Classic soapy brightness reminiscent of freshly washed linens
- Mild lemony acidity providing radiance
- Warm waxy base for continuity and softness
- Ozonic and aquatic notes evoking air and purity
Odor Strength: High impact
Tenacity: Moderate – fades smoothly into the heart
Effect: Adds brightness, modernity, and a clean atmosphere to any blend
👃 Sensory Evaluation
|
Evaluation Aspect |
Description |
|
Olfactory Family |
Aldehydic – Soapy – Ozonic – Acidic |
|
Odor Intensity |
8/10 – Strong even in low concentration |
|
Emotional Impression |
Evokes cleanliness, openness, freshness, and clarity |
|
Role in Formula |
Top note enhancer or primary top note |
🧪 Aromatic Structure Breakdown
Aldehyde C-11 MOA is a branched aliphatic saturated aldehyde. The methyl branch offers a balance between citrus sparkle and soft waxy warmth, ideal for enhancing top notes and adding a clean-air dimension to perfumes.
🤝 Blending Affinities
Aldehyde C-11 MOA blends harmoniously with:
- Citrus components: Citral, Lemon Oil
- Long-chain aldehydes: Aldehyde C-10, C-12 MNA
- Ozonic notes: Calone, Floralozone
- Green notes: Galbanum, Cis-3-Hexenol
- Soft woody bases: Iso E Super, Cashmeran
Best used to add: radiance, purity, freshness, airy sensations
🎶 Suggested Accords
- 🌺 Floral Accord
|
Material |
% |
CAS Number |
|
Aldehyde C-11 MOA |
3% |
19009-56-4 |
|
Phenyl Ethyl Alcohol |
30% |
60-12-8 |
|
Geraniol |
20% |
106-24-1 |
|
Linalool |
15% |
78-70-6 |
|
Benzyl Acetate |
32% |
140-11-4 |
- 🍑 Fruity Accord
|
Material |
% |
CAS Number |
|
Aldehyde C-11 MOA |
2% |
19009-56-4 |
|
Ethyl Maltol |
10% |
4940-11-8 |
|
Isoamyl Acetate |
25% |
123-92-2 |
|
Allyl Caproate |
18% |
123-68-2 |
|
Gamma Undecalactone |
45% |
104-67-6 |
- 🌿 Green Accord
|
Material |
% |
CAS Number |
|
Aldehyde C-11 MOA |
5% |
19009-56-4 |
|
Cis-3-Hexenol |
40% |
928-96-1 |
|
Galbanum Oil |
15% |
8023-91-4 |
|
Hexyl Acetate |
25% |
142-92-7 |
|
Linalyl Acetate |
15% |
115-95-7 |
- 🌳 Woody Accord
|
Material |
% |
CAS Number |
|
Aldehyde C-11 MOA |
4% |
19009-56-4 |
|
Iso E Super |
30% |
54464-57-2 |
|
Vetiveryl Acetate |
25% |
141-02-6 |
|
Cedarwood Virginia Oil |
20% |
8000-27-9 |
|
Sandalore® |
21% |
65113-99-7 |
🧴 Applications by Category
|
Category |
Usage Description |
|
Fine Fragrances |
As a clean, soapy top note |
|
Personal Care |
Used in liquid soaps, shampoos, gels |
|
Cleaning Products |
Enhances the "clean scent" in air fresheners and detergents |
|
Scented Candles |
Imparts a “clean home” character when burned |
⚠️ Safety & Regulatory Compliance
|
Item |
Details |
|
LD50 (oral, rat) |
> 5000 mg/kg |
|
LD50 (dermal, rabbit) |
> 5000 mg/kg |
|
Skin Irritation |
Possible at high concentrations |
|
Sensitization |
Not known as a skin sensitizer |
|
EU Classification (CLP) |
Not classified as hazardous |
|
IFRA Status |
Currently not restricted under IFRA 51 |
|
IFRA Link |
https://ifrafragrance.org/standards |
📚 References & Sources
- ChemicalBook: https://www.chemicalbook.com/ChemicalProductProperty_EN_CB0257437.htm
- PubChem: https://pubchem.ncbi.nlm.nih.gov/compound/2-Methyldecanal
🏁 Conclusion
Aldehyde C-11 MOA is a powerful and refined ingredient that brings a radiant sense of freshness, purity, and modernity. It is an excellent choice for elegant fragrances and high-quality care products.
✨ Available now at Atiab International – atiabintl.com
Please customer do their own research on the product and verify its proper use. This product cannot be returned.
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