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Ethylidene norbornene

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Synonyms & Trade Names
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.]
CAS No.
16219-75-3
RTECS No.
RB9450000
DOT ID & Guide
Formula
C₉H₁₂
Conversion
1 ppm = 4.92 mg/m3
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
C 5 ppm (25 mg/m3)
OSHA PEL
none See Appendix G
Measurement Methods
None available
See: NMAM or OSHA Methods
Physical Description
Colorless to white liquid with a turpentine-like odor.
Molecular Weight
120.2
Boiling Point
298°F
Freezing Point
-112°F
Solubility
?
Vapor Pressure
4 mmHg
Ionization Potential
?
Specific Gravity
0.90
Flash Point
(oc) 101°F
Upper Explosive Limit
?
Lower Explosive Limit
?
Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F.
Incompatibilities & Reactivities
Oxygen [Note: ENB should be stored in a nitrogen atmosphere since it reacts with oxygen.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, nose, throat; headache; cough, dyspnea (breathing difficulty); nausea, vomiting; olfactory, taste changes; chemical pneumonitis (aspiration liquid); In Animals: liver, kidney, urogenital injury; bone marrow effects
Target Organs
Eyes, skin, respiratory system, central nervous system, liver, kidneys, urogenital system, bone marrow
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:Daily
Remove:When wet or contaminated
Change:No recommendation
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0473
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health