ETHYLIDENE NORBORNENE

Chemical Identification
CAS # 16219-75-3
Formula

C₉H₁₂

Synonyms

ENB; 5-ethylidenebicyclo(2.2.1)-hept-2-ene; 5-ethylidene-2-norbornene [Note: Due to its reactivity, ENB may be stabilized with tert-butyl catechol.]

Physical Properties
Physical description Colorless to white liquid with a turpentine-like odor.
Boiling point 298°F Molecular weight 120.2
Freezing point/melting point -112°F Vapor pressure 4 mmHg
Flash point 79°F Vapor density
Specific gravity 0.90 Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating 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.

Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
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 REL-TWA TLV-TWA
 

2 ppm [2013]

PEL-TWA
 

 

PEL-STEL REL-STEL
 

 

TLV-STEL
 

4 ppm [2013]

PEL-STEL
 

 

PEL-C REL-C
 

5 ppm (25 mg/m³)

TLV-C
 

 

PEL-C
 

5 ppm (25 mg/m³)

Skin notation

NA

Skin notation
 

N

Skin notation
 

N

Skin notation
 

N

Notes:

Not established

Notes:
 

 

Notes:
 

 

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: Not listed Notes:
 

 

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

0.2 ppm/100 ppm/500 ppm

Last Updated Date : 01/28/2021