Diethanolamine, often abbreviated as DEA or DEOA, is an organic compound with the formula HN(CH2CH2OH)2. Pure diethanolamine is a white solid at room temperature, but its tendency to absorb water and to supercool mean it is often encountered as a colorless, viscous liquid. Diethanolamine is polyfunctional, being a secondary amine and a diol. Like other organic amines, diethanolamine acts as a weak base. Reflecting the hydrophilic character of the secondary amine and hydroxyl groups, DEA is soluble in water. Amides prepared from DEA are often also hydrophilic.
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Properties
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| Appearance & Physical State: | solid or viscous liquid with an amine odour |
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| Density: | 1.096 |
| Melting Point: | 27-30ºC |
| Boiling Point: | 268ºC |
| Flash Point: | 179ºC |
| Refractive Index: | 1.475-1.479 |
| Water Solubility: | MISCIBLE |
| Stability: | Stable. Incompatible with carbon dioxide, strong acids, strong oxidizing agents. Deliquescent. |
| Storage Condition: | Store at RT |
| Vapor Pressure: | <0.98 atm ( 100 °C) |
| Vapor Density: | 3.6 (vs air) |
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Safety Info
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| Symbol: |
GHS05 GHS07 GHS08 |
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| Sign: | Danger |
| hazard declaration: | H302; H315; H318; H373; H412 |
| hazard declaration add: | |
| waring notice: | P273; P280; P301 + P312 + P330; P305 + P351 + P338 + P310 |
| Hazard Codes: | Xn |
| Risk Statements: | R22; R38; R41; R48/22 |
| Safety Statements: | S26-S36/37/39-S46 |
| RIDADR: | UN 1760 |
| WGK Germany: | 1 |
| RTECS: | KL2975000 |
| Packing Group: | II |
| HS Code: | 2922120090 |
