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N-Ethylmorpholine																				Related Pages
Synonyms & Trade Names
			4-Ethylmorpholine
CAS No.
			100-74-3
	RTECS No.
			QE4025000
	DOT ID & Guide

FormulaC4H8ONCH2CH3
	Conversion
			1 ppm = 4.71 mg/m3
	IDLH
			100 ppmSee: 100743

Exposure Limits
			NIOSH RELTWA 5 ppm (23 mg/m3) [skin]
					OSHA PEL TWA 20 ppm (94 mg/m3) [skin] See Appendix G
	Measurement Methods
			**NIOSH** S146 (II-3)
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless liquid with an ammonia-like odor.													
										
Molecular Weight115.2	
	Boiling Point281°F
	Freezing Point-81°F
	SolubilityMiscible
	Vapor Pressure6 mmHg
	Ionization Potential?											
Specific Gravity0.90	
	Flash Point(oc) 90°F
	Upper Explosive Limit?
	Lower Explosive Limit?
Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
Incompatibilities & Reactivities
			Strong acids, strong oxidizers
Exposure Routes
			inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
			irritation eyes, nose, throat; visual disturbance: corneal edema, blue-gray vision, colored haloes
Target Organs
			Eyes, respiratory system
										
Personal Protection/Sanitation
			(See protection codes) **Skin:**Prevent skin contact
							**Eyes:**Prevent eye contact
							**Wash skin:**When contaminated
							**Remove:**When wet (flammable)
							**Change:**No recommendation
							**Provide:**Eyewash (>15%), Quick drench
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Water flush promptly
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			**NIOSH****Up to 50 ppm**: (APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*(APF = 10) Any supplied-air respirator***Up to 100 ppm**: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode*(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)*(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister(APF = 50) Any self-contained breathing apparatus with a full facepiece(APF = 50) Any supplied-air respirator with a full facepiece**Emergency or planned entry into unknown concentrations or IDLH conditions:** (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus**Escape:** (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canisterAny appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0480

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
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