Label abbreviations descriptions

PROPYLENE IMINE†

Chemical Identification
CAS # 75-55-8
Formula
 

C₃H₇N
Synonyms
 

2-methylaziridine; 2-methylethyleneimine; propyleneimine; propylene imine (inhibited); propylenimine

Physical Properties
Physical description Colorless, oily liquid with an ammonia-like odor.
Boiling point 152°F Molecular weight 57.11
Freezing point/melting point -85°F Vapor pressure 112 mmHg
Flash point 25°F Vapor density 2
Specific gravity 0.8039-0.807 at 77°F Ionization potential 9.00 eV
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 3 NFPA fire rating 3
NFPA reactivity rating 0 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)
Sampling group
Sampler/Sampling media
Sampling time*
 

 
Sampling volume (TWA)*
 

 
Sampling flow rate (TWA)*
 

 
Sampling volume (STEL/Peak/C)*
 

 
Sampling flow rate (STEL/Peak/C)*
 

 
Analytical method instruments
Method reference
Notes
 

 
Special requirements
 

 

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
 

 
Bulk Method
 

 

On-Site Screening Techniques
Device Detector tube
Model/Type Gastec 180
Sampling information
(see manufacturer instructions) 		1-60 ppm range

Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA
 

2 ppm (5 mg/m³)

 REL-TWA
 

2 ppm (5 mg/m³)

 TLV-TWA
 

0.2 ppm [2008]

 PEL-TWA
 

2 ppm (5 mg/m³)
PEL-STEL
 

 

 REL-STEL
 

 

 TLV-STEL
 

0.4 ppm [2008]

 PEL-STEL
 

 
PEL-C
 

 

 REL-C
 

 

 TLV-C
 

 

 PEL-C
 

 
Skin notation
 

Y

 Skin notation
 

Y

 Skin notation
 

Y

 Skin notation
 

Y
Notes:
 

See 29 CFR 1910.1000 Table Z-1.

 Notes:
 

CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens.

 Notes:
 

 

 Notes:
 

 
Health factors:  See NIH-NLM PubChem. IDLH
 

100 ppm
Carcinogenic classifications: IARC-2B, NIOSH-Ca, NTP-R, TLV-A3 Notes:
 

Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 

Additional Resources and Literature References

Last Updated Date : 01/11/2021