- ▸ Surfactant: Nonionic surfactant for industrial cleaning.
- ▸ Emulsifier: Stabilizes oil-in-water emulsions.
- ▸ Wetting agent: Lowers surface tension in aqueous systems.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
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Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.
Octylphenol Ethoxylate (CAS 9036-19-5), also called octoxynol, is a nonionic surfactant formed by ethoxylating tert-octylphenol. It is used as a wetting agent, detergent, and emulsifier across industrial cleaning, emulsion, and process applications.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU): Not determined from public registry
- EC number: 618-541-1
TSCA Inventory flag XU: a substance exempt from reporting under the Chemical Data Reporting Rule (40 CFR 711) (EPA flag legend).
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is 2-(2-[4-(1,1,3,3-tetramethylbutyl)phenoxy]ethoxy)ethanol used for?
This material (CAS 9036-19-5), also called octylphenol ethoxylate or octoxynol, is a nonionic surfactant formed by ethoxylating tert-octylphenol. It is used as a wetting agent, detergent, and emulsifier across industrial cleaning, emulsion, and process applications.
What is octylphenol ethoxylate?
It is a nonionic surfactant made by adding ethylene oxide units to tert-octylphenol. The resulting amphiphile lowers surface tension and stabilizes oil-in-water emulsions, which is why it is used in industrial cleaning and process formulations.
What is the CAS number and molecular formula?
The CAS number is 9036-19-5. Because octoxynol is an ethoxylated UVCB with a distribution of ethylene-oxide chain lengths, it has no single molecular formula. It is classified within the nonionic surfactant family.
Is octylphenol ethoxylate the same as nonylphenol ethoxylate?
No. Octylphenol ethoxylate is built on a tert-octylphenol base, whereas nonylphenol ethoxylate is built on a nonylphenol base; they are distinct surfactants with different CAS numbers. Specify CAS 9036-19-5 to ensure the octylphenol grade.
What is the bulk price and what HS code applies?
It is classified under HS 3402.42 (non-ionic surface-active agents) and supplied with a CoA and SDS. Submit a bulk RFQ with your target volume and packaging for current pricing.
What is the REACH and TSCA regulatory status of Octylphenol Ethoxylate (Octoxynol)?
Octylphenol Ethoxylate (Octoxynol) (CAS 9036-19-5) is listed as Active on the U.S. EPA TSCA Inventory; its REACH registration status is not determined from the public ECHA registry.