Poly(oxy-1,2-ethanedyl), alpha-(nonylphenyl)-omega-hydroxy- (CAS 9016-45-9) — Woody N/A Note Fragrance Ingredient
Poly(oxy-1,2-ethanedyl), alpha-(nonylphenyl)-omega-hydroxy-
CAS 9016-45-9
What Is Poly(oxy-1,2-ethanedyl), alpha-(nonylphenyl)-omega-hydroxy-?
Poly(oxy-1,2-ethanedyl), alpha-(nonylphenyl)-omega-hydroxy- is a synthetic surfactant commonly found in cleaning products and industrial formulations. It helps stabilize mixtures of oil and water. While not typically used in fine fragrances, it appears in some functional products where emulsification is needed alongside scent delivery.
Safety Profile
USE WITH AWARENESSWhat Does Poly(oxy-1,2-ethanedyl), alpha-(nonylphenyl)-omega-hydroxy- Smell Like?
This surfactant has minimal odor impact at typical usage levels, presenting as nearly odorless with faint waxy undertones. In concentrated form, it may exhibit a subtle plastic-like character reminiscent of polyethylene packaging. Its olfactory contribution is primarily functional rather than aromatic, serving as a neutral base for fragrance delivery systems.
2D Molecular Structure
SMILES: [H]OCCO*.CCCCCCCCCC1=CC=CC=C1 |c:16,18,t:14,lp:1:2,4:2,m:5:19.20.18,Sg:n:1,2,3::ht|
Chemistry, Properties & Perfumer Guide
The Chemistry
This polyethylene glycol derivative belongs to the class of nonionic surfactants, synthesized through ethoxylation of nonylphenol. The polymerization process creates a chain of ethylene oxide units terminated by a hydroxyl group. While not a fragrance ingredient per se, its surface-active properties make it useful in fragrance delivery systems where emulsification is required.
Physical & Chemical Properties
| Appearance | Colorless to pale yellow liquid |
|---|---|
| Solubility | Soluble in water and organic solvents |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Cleaning Products | 1-5% | 0.5-10% | Emulsifier and stabilizer |
| Industrial Formulations | 2-8% | 1-15% | Processing aid |
Classic Accords
Tip: Use as a neutral base for fragrance solubilization in aqueous systems.
Alternatives & Comparisons
Milder surfactant for personal care applications with better skin compatibility.
Natural-derived alternative with similar emulsifying properties.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not restricted by IFRA
GHS Classification
RIFM Assessment
Not evaluated by RIFM as it’s primarily a functional ingredient.
Sustainability
As a petrochemical-derived material, its environmental impact stems from non-renewable sourcing. Biodegradability depends on the degree of ethoxylation, with longer chains being less biodegradable. Some manufacturers are moving toward more sustainable surfactant alternatives in response to environmental concerns about alkylphenol ethoxylates.
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References
- European Chemicals Agency. Nonylphenol ethoxylates. ECHA
- EPA Fact Sheet: Nonylphenol and Nonylphenol Ethoxylates EPA
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorPhysicochemical Properties
DTXSID: DTXSID1027718
Physical Properties
| Melting Point | 42.75 °C🔬 EPA CTX |
Partition & Solubility
| LogP (Octanol-Water) | 3.7 Log10 unitless🔬 EPA CTX |
Transport Properties
| Vapor Pressure | 1.05 mmHg🔬 EPA CTX |
Molecular Descriptors
| Topological Polar Surface Area | 29.46 Ų💻 Computed |
| H-Bond Donors | 1 count💻 Computed |
| H-Bond Acceptors | 2 count💻 Computed |
| Rotatable Bonds | 11 count💻 Computed |
| Aromatic Rings | 1 count💻 Computed |
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.
