Diethanolamine
Chemical compound / From Wikipedia, the free encyclopedia
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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 tendencies to absorb water and to supercool[2] often results in it being found in a colorless, viscous liquid state. 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. In 2013, the chemical was classified by the International Agency for Research on Cancer as "possibly carcinogenic to humans" (Group 2B).
Names | |
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Preferred IUPAC name
2,2′-Azanediyldi(ethan-1-ol) | |
Other names
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Identifiers | |
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3D model (JSmol) |
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3DMet | |
605315 | |
ChEBI | |
ChEMBL | |
ChemSpider |
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ECHA InfoCard | 100.003.517 |
EC Number |
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KEGG |
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MeSH | diethanolamine |
PubChem CID |
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RTECS number |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
C4H11NO2 | |
Molar mass | 105.137 g·mol−1 |
Appearance | Colourless crystals |
Odor | Ammonia odor |
Density | 1.097 g·mL−1 |
Melting point | 28.00 °C; 82.40 °F; 301.15 K |
Boiling point | 271.1 °C; 519.9 °F; 544.2 K |
Miscible | |
log P | -1.761 |
Vapor pressure | <1 Pa (at 20 °C) |
UV-vis (λmax) | 260 nm |
Refractive index (nD) |
1.477 |
Thermochemistry | |
Heat capacity (C) |
137 J·K−1·mol−1 |
Std enthalpy of formation (ΔfH⦵298) |
−496.4 – −491.2 kJ·mol−1 |
Std enthalpy of combustion (ΔcH⦵298) |
−26.548 – −26.498 MJ·kmol−1 |
Hazards | |
GHS labelling: | |
Danger | |
H302, H315, H318, H373 | |
P280, P305+P351+P338 | |
Flash point | 138 °C (280 °F; 411 K) |
365 °C (689 °F; 638 K) | |
Explosive limits | 1.6–9.8%[1] |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose) |
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NIOSH (US health exposure limits): | |
PEL (Permissible) |
None[1] |
REL (Recommended) |
TWA: 3 ppm (15 mg/m3)[1] |
IDLH (Immediate danger) |
N.D.[1] |
Safety data sheet (SDS) | sciencelab.com |
Related compounds | |
Related alkanols |
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Related compounds |
Diethylhydroxylamine |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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