DIETHANOLAMINE- ▸ Gas treating: Absorbent for CO2 and hydrogen sulfide removal
- ▸ Surfactant intermediate: Feedstock for amides and soaps
- ▸ Metalworking fluids: Emulsifier and corrosion-inhibitor base in cutting oils
- ▸ Cleaners & polishes: Detergent and emulsifier
- ▸ Rubber chemicals: Intermediate in accelerator manufacture
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.
⚠ WARNING: This product can expose you to Diethanolamine, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
Diethanolamine (CAS 111-42-2) is an amino-alcohol that is both a secondary amine and a diol. It is used to scrub acid gases such as CO2 and hydrogen sulfide, as an intermediate for surfactants, soaps, and rubber chemicals, and as an emulsifier and humectant in cutting fluids, cleaners, and cosmetics.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 203-868-0
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Regulatory restriction status
Diethanolamine (DEA) (CAS 111-42-2) appears on the regulatory list(s) below. This is public regulatory information about the substance — not a statement about any specific supplier’s material, and not a safety claim. Confirm the current status for your jurisdiction and intended use.
- California Proposition 65: listed for cancer, listed 22 Jun 2012. A California Proposition 65 warning applies (see the warning above).
Sources: ECHA Candidate List / Annex XIV / Annex XVII (echa.europa.eu); U.S. EPA TSCA; UN Stockholm Convention / EU POPs Regulation; California OEHHA Proposition 65 list. Retrieved 2026-07-13.
Solutions Using This Product
Process-solution guides on this site that specify this chemistry:
- Amines & Antifoams for Reliable Gas Sweetening (Oil, Gas & Mining)
Frequently Asked Questions
What is diethanolamine used for?
Diethanolamine (DEA, CAS 111-42-2) is an amino-alcohol used to scrub acid gases such as CO2 and hydrogen sulfide from gas streams, as an intermediate for surfactants, soaps, and rubber accelerators, and as an emulsifier and corrosion-inhibitor base in metalworking and cutting fluids. It also serves as a detergent and emulsifier in cleaners and polishes. RawSource supplies it in bulk to manufacturers in these segments.
Is diethanolamine an amine or an alcohol?
Both. DEA is an amino-alcohol that is simultaneously a secondary amine and a diol, carrying two hydroxyl groups and one secondary amine nitrogen (C4H11NO2). This dual functionality is what makes it useful both as an acid-gas absorbent and as a surfactant intermediate.
What is the cost of bulk diethanolamine?
Bulk diethanolamine pricing depends on volume, packaging (drums, totes, or bulk), and destination. RawSource quotes against current freight and supply; request a bulk quote with your target volume and ship-to for a firm price.
How is diethanolamine shipped and packaged?
DEA classifies under UN 3082 for transport and HS 2922.12 (diethanolamine and its salts). RawSource supplies it in drums, IBC totes, and bulk quantities, with a current SDS and Certificate of Analysis provided per shipment.
What is the CAS number for diethanolamine?
Diethanolamine's CAS number is 111-42-2, molecular formula C4H11NO2. It is also referenced as 2,2'-iminodiethanol and DEA. Request a CoA and SDS from RawSource to confirm grade and specification for your application.
What is the REACH and TSCA regulatory status of Diethanolamine (DEA)?
Diethanolamine (DEA) (CAS 111-42-2) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 203-868-0).