Diethanolamine

Diethanolamine
Names
	Preferred IUPAC name 2,2′-Azanediyldi(ethan-1-ol)
	Other names Bis(hydroxyethyl)amine; N,N-Bis(2-hydroxyethyl)amine; 2,2'-Dihydroxydiethylamine; β,β'-Dihydroxydiethylamine; Diolamine; 2-[(2-Hydroxyethyl)amino]ethanol; 2,2'-Iminobisethanol; Iminodiethanol; Di(2-hydroxyethyl)amine; bis(2-Hydroxyethyl)amine; 2,2'-Iminodiethanol;
Identifiers
CAS Number	111-42-2 ;
3D model (JSmol)	Interactive image;
3DMet	B01050;
Beilstein Reference	605315
ChEBI	CHEBI:28123 ;
ChEMBL	ChEMBL119604 ;
ChemSpider	13835604 ;
ECHA InfoCard	100.003.517
EC Number	203-868-0;
KEGG	D02337 ;
MeSH	diethanolamine
PubChem CID	8113;
RTECS number	KL2975000;
UNII	AZE05TDV2V ;
CompTox Dashboard (EPA)	DTXSID3021932 ;
	InChI InChI=1S/C4H11NO2/c6-3-1-5-2-4-7/h5-7H,1-4H2 Key: ZBCBWPMODOFKDW-UHFFFAOYSA-N ;
	SMILES OCCNCCO;
Properties
Chemical formula	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
Solubility in water	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:
Pictograms
Signal word	Danger
Hazard statements	H302, H315, H318, H373
Precautionary statements	P280, P305+P351+P338
Flash point	138 °C (280 °F; 411 K)
Autoignition; temperature	365 °C (689 °F; 638 K)
Explosive limits	1.6–9.8%
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	120 mg·kg−1 (intraperitoneal, rat); 710 mg·kg−1 (oral, rat); 778 mg·kg−1 (intravaneous, rat); 12.2 g·kg−1 (dermal, rabbit);
	NIOSH (US health exposure limits):
PEL (Permissible)	None
REL (Recommended)	TWA: 3 ppm (15 mg/m3)
IDLH (Immediate danger)	N.D.
Safety data sheet (SDS)	sciencelab.com
Related compounds
Related alkanols	N-Methylethanolamine; Dimethylethanolamine; Diethylethanolamine; N,N-Diisopropylaminoethanol; Methyl diethanolamine; Triethanolamine; Bis-tris methane; Meglumine;
Related compounds	Diethylhydroxylamine
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

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 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).

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