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Ethyleneimine

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Synonyms & Trade Names
Aminoethylene, Azirane, Aziridine, Dimethyleneimine, Dimethylenimine, Ethylenimine, Ethylimine
CAS No.
151-56-4
RTECS No.
KX5075000
DOT ID & Guide
1185 131P(inhibited)
Formula
C₂H₅N
Conversion
1 ppm = 1.76 mg/m3
IDLH
Ca [100 ppm]
See: 151564
Exposure Limits
NIOSH REL
Ca See Appendix A
OSHA PEL
[1910.1012] See Appendix B
Measurement Methods
NIOSH 3514
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with an ammonia-like odor. [Note: Usually contains inhibitors to prevent polymerization.]
Molecular Weight
43.1
Boiling Point
133°F
Freezing Point
-97°F
Solubility
Miscible
Vapor Pressure
160 mmHg
Ionization Potential
9.20 eV
Specific Gravity
0.83
Flash Point
12°F
Upper Explosive Limit
54.8%
Lower Explosive Limit
3.3%
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities
Polymerizes explosively in presence of acids [Note: Explosive silver derivatives may be formed with silver alloys (e.g., silver solder).]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, nose, throat; nausea, vomiting; headache, dizziness; pulmonary edema; liver, kidney damage; eye burns; skin sensitization; [potential occupational carcinogen]
Target Organs
Eyes, skin, respiratory system, liver, kidneys
Cancer Site
[in animals: lung & liver tumors]
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated/Daily
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

(See Appendix E)

NIOSH

At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(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 canister
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0100   MEDICAL TESTS: 0102
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health