Diethanolamine
CAS 111-42-2
EC 203-868-0
Formula C4H11NO2
MW 105.14 g/mol
Amines Personal Care & CosmeticsPharmaceuticals & HealthcareTextile, Leather & Paper Humectant & MoisturizingpH Regulation & BufferingPreservation & Biocide
Description
Diethanolamine (DEA), also known as diolamine, iminodiethanol, and H2DEA, is a bifunctional organic compound carrying both amine and hydroxyl groups. It carries no E-code designation. With CAS 111-42-2 and EC 203-868-0, it is classified under HS code 29221990 and belongs to the ethanolamine family of amines.
In personal care and pharmaceutical formulations, DEA functions as a pH buffer and neutralising agent, reacting with acidic components to stabilise product pH within target ranges. It also acts as a humectant in hair dyes and topical preparations, drawing moisture into the formulation matrix. In textile and leather processing, it serves as an antimicrobial agent and process auxiliary.
DEA is supplied in technical and cosmetic grades, with compliance documentation available for REACH registration. Packaging typically includes IBC containers and bulk tankers for industrial volumes. Buyers should confirm current SDS and regulatory status under EU cosmetics legislation prior to formulation use.
In personal care and pharmaceutical formulations, DEA functions as a pH buffer and neutralising agent, reacting with acidic components to stabilise product pH within target ranges. It also acts as a humectant in hair dyes and topical preparations, drawing moisture into the formulation matrix. In textile and leather processing, it serves as an antimicrobial agent and process auxiliary.
DEA is supplied in technical and cosmetic grades, with compliance documentation available for REACH registration. Packaging typically includes IBC containers and bulk tankers for industrial volumes. Buyers should confirm current SDS and regulatory status under EU cosmetics legislation prior to formulation use.
Physical Properties
| Melting Point | 28 °C |
| Boiling Point | 268.8 °C @ Press: 760 Torr |
| Density | 1.0966 g/cm³ @ Temp: 20 °C |
| Flash Point | 280 °F |
| Appearance | Ethanolamines can be detected by odor as low as 23 ppm. Monoethanolamine is a colorless, viscous liquid or solid (below 111C) with an unpleasant, ammonialike odor |
| Color | APHA: ≤15 |
| Odor | Mild ammoniacal; faint, fishy; characteristic. |
| Form | Viscous Liquid or Low Melting Solid |
| Water Solubility | MISCIBLE |
| Vapor Pressure | <0.98 atm ( 100 °C) |
| Refractive Index | n 20/D 1.477(lit.) |
| pH | 11.0-12.0 (25℃, 1M in H2O) |
| Log P | -2.46 at 25℃ |
Safety & Handling (Learn More)
Danger GHS05 GHS07 GHS08
H
H302H315H317H318H335H336H351H361H370H371H372H373H401H412
P
P203P260P261P264P270P271P272P273P280P317P318P319P321P330P405P501P264+P265P301+P317P302+P352P304+P340P308+P316P332+P317P333+P317P362+P364P403+P233P305+P354+P338
Trade & Regulatory
| HS Code | 29221990 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 1 |
Other Names
2-(2-hydroxyethylamino)ethanolDEAH2deaDiolamineIminodiethanol2,2-IMINODIETHANOL2,2'-IMINODIETHANOL
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Derivatives
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