NIOSH logo and tagline

Propylene imine

Related Pages
Synonyms & Trade Names
2-Methylaziridine, 2-Methylethyleneimine, Propyleneimine, Propylene imine (inhibited), Propylenimine
CAS No.
75-55-8
RTECS No.
CM8050000
DOT ID & Guide
1921 131P(inhibited)
Formula
C₃H₇N
Conversion
1 ppm = 2.34 mg/m3
IDLH
Ca [100 ppm]
See: 75558
Exposure Limits
NIOSH REL
Ca TWA 2 ppm (5 mg/m3) [skin] See Appendix A
OSHA PEL
TWA 2 ppm (5 mg/m3) [skin]
Measurement Methods
None available
See: NMAM or OSHA Methods
Physical Description
Colorless, oily liquid with an ammonia-like odor.
Molecular Weight
57.1
Boiling Point
152°F
Freezing Point
-85°F
Solubility
Miscible
Vapor Pressure
112 mmHg
Ionization Potential
9.00 eV
Specific Gravity
0.80
Flash Point
25°F
Upper Explosive Limit
?
Lower Explosive Limit
?
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities
Acids, strong oxidizers, water, carbonyl compounds, quinones, sulfonyl halides [Note: Subject to violent polymerization in contact with acids. Hydrolyzes in water to form methylethanolamine.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
Eye, skin burns; [potential occupational carcinogen]
Target Organs
Eyes, skin
Cancer Site
[in animals: nasal tumors]
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, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Water flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

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 canister providing protection against the compound of concern
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0322   MEDICAL TESTS: 0199
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health