Poly(oxy-1,2-ethanediyl),alpha-[(1,1,3,3-tetramethylbutyl)phenyl]-omega-hydroxy- (CAS 9036-19-5) — Citrus Non-volatile Note Fragrance Ingredient

Citrus · Floral

Poly(oxy-1,2-ethanediyl),alpha-[(1,1,3,3-tetramethylbutyl)phenyl]-omega-hydroxy-

CAS 9036-19-5

Origin
synthetic
Note
Non-volatile
IFRA
Generally safe
Data as of: Apr 2026

What Is Poly(oxy-1,2-ethanediyl),alpha-[(1,1,3,3-tetramethylbutyl)phenyl]-omega-hydroxy-?

This synthetic polymer is commonly used as a surfactant and stabilizing agent in cosmetic and personal care products. You’ll find it in shampoos, conditioners, and liquid soaps where it helps blend ingredients and create foam. While not a fragrance ingredient itself, it plays a crucial role in maintaining scent stability and product performance in many fragranced formulations.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
Non-toxic in cosmetic applications
Approved for use in personal care
CAS
9036-19-5
Formula
Mixture
MW
Variable
Odor Family
Citrus · Floral
Layer 1 · Enthusiast

What Does Poly(oxy-1,2-ethanediyl),alpha-[(1,1,3,3-tetramethylbutyl)phenyl]-omega-hydroxy- Smell Like?

This material is odorless and does not contribute directly to fragrance profiles. As a non-volatile polymer, it functions as a solubilizer and stabilizer rather than a scent component. Its primary role is to maintain the integrity of fragrance compositions in formulations, particularly in aqueous systems where it helps prevent separation and enhances product performance.

Layer 2

Chemistry, Properties & Perfumer Guide

The Chemistry

This polyethylene glycol ether is a nonionic surfactant synthesized through the ethoxylation of octylphenol. The hydrophilic polyoxyethylene chain and hydrophobic alkylphenol moiety create an amphiphilic structure that lowers surface tension. The degree of ethoxylation determines its solubility properties. As a synthetic polymer, it does not occur naturally and is produced through controlled chemical processes in industrial settings.

Physical & Chemical Properties

AppearanceColorless to pale yellow liquid
SolubilitySoluble in water and most organic solvents

Perfumer Guide

Note Position
Non-volatile
Volatility
None
Blending
N/A
ApplicationTypical %RangeNotes
Shampoos1-3%0.5-5%Foam stabilizer
Conditioners0.5-2%0.1-3%Emulsifier
Liquid Soaps2-4%1-6%Surfactant

Classic Accords

Tip: Use as a solubilizer for fragrance oils in clear aqueous systems.

Alternatives & Comparisons

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

General reference only. Consult current IFRA Standards Library before formulating.

IFRA Status

Not restricted by IFRA – functions as formulation aid rather than fragrance material.

RIFM Assessment

Not evaluated by RIFM as it is not a fragrance material.

Sustainability

As a synthetic material, this polymer is petroleum-derived. Manufacturers are increasingly adopting green chemistry principles to reduce environmental impact during production. It is biodegradable to some degree depending on the degree of ethoxylation, but long-chain variants may persist in aquatic environments. Proper wastewater treatment is recommended for industrial discharges.

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References

    Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.

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