Agent Name
N-Ethylmorpholine
Major Category
Nitrogen Compounds
Synonyms
4-Ethylmorpholine; Ethylmorpholine; Morpholine, 4-ethyl-; N-Ethylmorfolin [Czech]; N-Ethylmorpholine; NEM; [ChemIDplus] UN1993
Description
Colorless liquid with an ammonia-like odor; [NIOSH]
Sources/Uses
Used as a catalyst in the production of polyurethane foam; [ACGIH]
Comments
Has potential to cause corneal damage; [ACGIH]
Skin Designation (ACGIH)
Yes
Excerpts from Documentation for IDLHs
Exposures to 100 ppm for 2.5 minutes have resulted in olfactory fatigue and irritation of the eyes, nose, and throat; irritation was slight after 25 minutes at 50 ppm and absent at 25 ppm [Smyth 1964]. Corneal edema has been noted in workers exposed to concentrations greater than 40 ppm for several hours [Dernehl 1966]. In another study, workers exposed to concentrations as high as 11 ppm but averaging about 3 to 4 ppm complained of drowsiness, optical halos, and foggy vision [Woewicki 1968].
Odor Threshold Low
0.08 ppm
Odor Threshold High
0.25 ppm
Lethal Concentration
LCLo (rat) = 2,000 ppm/4H
Explanatory Notes
Detection odor threshold from AIHA (mean = 0.085 ppm); Flash point = 32 deg C; VP from HSDB;
NFPA
may ignite at ambient temp
Processes
Industrial Processes with risk of exposure: