Amines & Amides Available — Bulk Only

Diethanolamine (DEA)

DEA
CAS 111-42-2 · Formula C4H11NO2 · MW 105.14 g/mol

A bifunctional amino-alcohol used for acid-gas treating and as a building block for surfactants and amides. 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.

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UN Number
UN 3082
Hazard Class
Class 9
HS Code
2922.12
At a Glance
Material Family
Amines & Amides
Record Type
Pure compound
Primary Role
pH Adjustment · Corrosion Inhibition
Solubility
≥ 100 mg/mL at 14 °C
Functional Roles
DIETHANOLAMINE
BUFFERING
Applications & Use Cases
  • 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
Physical Properties
Melting Point
28 °C
Boiling Point
269 °C at 760 mmHg (Decomposes)
Density
1.095 at 28 °C
Solubility
≥ 100 mg/mL at 14 °C
Vapor Pressure
5 mmHg at 138 °C; <0.01 mmHg at 20 °C
Flash Point
137 °C
pH
Strong base. pH of 0.1 N aqueous solution: 11.0
Safety & Handling
Full SDS available on request

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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DOT / UN Transport Classification
DOT hazard class 9 placard
UN / DOT NumberUN 3082
Hazard Class / DivisionClass 9
Proper Shipping NameEnvironmentally hazardous substance, liquid, n.o.s.

Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.

HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2922 . 12
Chapter 29
Organic chemicals
Heading 29.22
Internationally harmonized (WCO HS)
Subheading 2922.12
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
111-42-2
Molecular Formula
C4H11NO2
Molecular Weight
105.14 g/mol
IUPAC Name
2-(2-hydroxyethylamino)ethanol
INCI Name
DIETHANOLAMINE
PubChem CID
InChI Key
ZBCBWPMODOFKDW-UHFFFAOYSA-N
Synonyms & Trade Names
DIETHANOLAMINE 2,2'-Iminodiethanol Diolamine Iminodiethanol Bis(2-hydroxyethyl)amine 2-(2-Hydroxyethylamino)ethanol Diethanolamin Diethylolamine 2,2'-Dihydroxydiethylamine N,N-Diethanolamine Ethanol, 2,2'-iminobis- Di(2-hydroxyethyl)amine 2,2'-Iminobisethanol N,N'-Iminodiethanol Niax DEOA-LF Diaethanolamin Bis(hydroxyethyl)amine Dabco DEOA-LF 2-[(2-hydroxyethyl)amino]ethan-1-ol
Full Description

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.

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.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.