ETHYLENEIMINE‡

Chemical Identification
Chemical Identification
CAS # 151-56-4
Formula
 

C₂H₅N

Synonyms
 

aminoethylene; azirane; aziridine; dimethyleneimine; dimethylenimine; ethylenimine (inhibited); ethylimine

Physical Properties
Physical Properties
Physical description Colorless liquid with an ammonia-like odor.
Boiling point 133°F Molecular weight 43.1
Freezing point/melting point -97°F Vapor pressure 160 mmHg
Flash point 12°F Vapor density 1.48
Specific gravity 0.83 Ionization potential 9.20 eV
Lower explosive limit (LEL) 3.3% Upper explosive limit (UEL) 54.8%
NFPA health rating 4 NFPA fire rating 3
NFPA reactivity rating 3 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 1175
Sampling group
Sampler/Sampling media Bubbler (Folin's reagent)
Sampling time*
 

 

Sampling volume (TWA)*
 

1 L - 48 L

Sampling flow rate (TWA)*
 

0.2 L/min

Sampling volume (STEL/Peak/C)*
 

 

Sampling flow rate (STEL/Peak/C)*
 

 

Analytical method instruments HPLC-UV
Method reference NIOSH 3514 (fully validated)
Notes
 

Ship at 5°C in dark

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.

Wipe Method
Wipe Method
Sampler/Sampling media
 

 

Bulk Method
Bulk Method
 

 

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

Ca

REL-TWA
 

 

TLV-TWA
 

0.05 ppm [2008]

PEL-TWA
 

0.5 ppm (1 mg/m³)

PEL-STEL
 

 

REL-STEL
 

 

TLV-STEL
 

0.1 ppm [2008]

PEL-STEL
 

 

PEL-C
 

 

REL-C
 

 

TLV-C
 

 

PEL-C
 

 

Skin notation
 

N

Skin notation
 

N

Skin notation
 

Y

Skin notation
 

Y

Notes:
 

See 29 CFR 1910.1003, 13 Carcinogens.

Notes:
 

CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A.

Notes:
 

 

Notes:
 

See California Code of Regulations, Title 8, Section 5209. Carcinogens.

Health factors:  See NIH-NLM PubChem. IDLH
 

100 ppm

Carcinogenic classifications: IARC-2B, NIOSH-Ca, OSHA-Ca, TLV-A3 Notes:
 

Ca

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

 

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Ethyleneimine, stabilized

NIOSH: Pocket Guide to Chemical Hazards - Ethyleneimine

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 2017.

Last Updated Date : 12/28/2020