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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)

FormulaC3H7N
	Conversion
			1 ppm = 2.34 mg/m3
	IDLH
			Ca [100 ppm]See: 75558

Exposure Limits
			NIOSH RELCa 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 Weight57.1	
	Boiling Point152°F
	Freezing Point-85°F
	SolubilityMiscible
	Vapor Pressure112 mmHg
	Ionization Potential9.00 eV											
Specific Gravity0.80	
	Flash Point25°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 concernAny 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 NIOSH Pocket Guide to Chemical Hazards
Introduction
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CAS Numbers
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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
First Aid Procedures Follow NIOSH Facebook
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