N-Methylethanolamine

N-Methylethanolamine[1]
IUPAC name 2-Methylaminoethanol[citation needed]
Other names Methyl β-hydroxyethylamine[citation needed]
Identifiers
CAS number	109-83-1 Y
PubChem	8016
ChemSpider	13836021 Y
EC number	203-710-0
UN number	2735
MeSH	N-methylaminoethanol
ChEBI	CHEBI:21763 Y
ChEMBL	CHEMBL104083 Y
RTECS number	KL6650000
Beilstein Reference	1071196
Jmol-3D images	Image 1
SMILES CNCCO
InChI InChI=1S/C3H9NO/c1-4-2-3-5/h4-5H,2-3H2,1H3 Y Key: OPKOKAMJFNKNAS-UHFFFAOYSA-N Y
Properties
Molecular formula	C3H9NO
Molar mass	75.11 g mol−1
Appearance	Colourless, transparent liquid
Odor	Ammoniacal
Density	935 g mL−1
Melting point	-5 °C, 268.65 K, 24 °F
Boiling point	158 °C, 431.2 K, 316 °F
Solubility in water	Miscible
log P	1.062
Vapor pressure	70 Pa (at 20 °C)
Refractive index (nD)	1.439
Hazards
GHS pictograms
GHS signal word	DANGER
GHS hazard statements	H302, H312, H314
GHS precautionary statements	P280, P305+351+338, P310
EU Index	603-080-00-0
EU classification	C
R-phrases	R21/22, R34
S-phrases	(S1/2), S26, S36/37/39, S45
Flash point	76 °C
Autoignition temperature	350 °C
Explosive limits	1.6–19.8%
Related compounds
Related alkanols	Dimethylethanolamine Diethylethanolamine Diethanolamine N,N-Diisopropylaminoethanol Methyl diethanolamine Triethanolamine Bis-tris methane
Related compounds	Dimethylamine Trimethylamine Unsymmetrical dimethylhydrazine N-Nitrosodimethylamine Biguanide Diethylamine Triethylamine Diethylhydroxylamine Diisopropylamine Dimethylaminopropylamine Diethylenetriamine N,N-Diisopropylethylamine Triisopropylamine Tris(2-aminoethyl)amine Mechlorethamine HN1 (nitrogen mustard) HN3 (nitrogen mustard)
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

N-Methylethanolamine is an alkanolamine and a toxic flammable corrosive colorless viscous liquid. It is the biochemical precursor of choline.

With both an amine and an hydroxyl functional groups, it is a useful intermediate in the chemical synthesis of various products including polymers and pharmaceuticals. It is also used as a solvent, for example in the natural gas-processing industry together with its analogs ethanolamine and dimethylethanolamine.

N-Methylethanolamine can be prepared by the reaction of ethylene oxide with methylamine.

See also

• Ethanolamine
• Dimethylethanolamine

References