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151467

Sigma-Aldrich

5-Ethylidene-2-norbornene

contains 100-700 ppm BHT as inhibitor, mixture of endo and exo, 99%

Synonym(s):

2-Ethylidene-5-norbornene, 2-Ethylidenebicyclo[2.2.1]hept-5-ene, 5-Ethylidenebicyclo[2.2.1]hept-2-ene, 5-Ethylidenenorbornene, Ethylidenenorbornene

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About This Item

Empirical Formula (Hill Notation):
C9H12
CAS Number:
16219-75-3
Molecular Weight:
120.19
EC Number:
240-347-7
MDL number:
MFCD00167576
UNSPSC Code:
12352100
PubChem Substance ID:
24849136
NACRES:
NA.22

vapor density

4.1 (vs air)

Quality Level

100

vapor pressure

4.6 mmHg ( 20 °C)

assay

99%

form

liquid

contains

100-700 ppm BHT as inhibitor

expl. lim.

~6.4 %

refractive index

n20/D 1.49 (lit.)

bp

146 °C (lit.)

density

0.893 g/mL at 25 °C (lit.)

SMILES string

C\C=C1/C[C@H]2C[C@@H]1C=C2

InChI

1S/C9H12/c1-2-8-5-7-3-4-9(8)6-7/h2-4,7,9H,5-6H2,1H3/b8-2+/t7-,9-/m0/s1

InChI key

OJOWICOBYCXEKR-WHZSQGQPSA-N

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General description

5-Ethylidene-2-norbornene, also known as ethylidenenorbornene, is a bicyclic diene and a commercial petrochemical. It is widely used in the chemical industry as a copolymer for the synthesis of various polymer materials.

Application

5-Ethylidene-2-norbornene was used as self-healing agent for polymeric composites.

signalword

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Aquatic Chronic 2 - Asp. Tox. 1 - Flam. Liq. 3 - Skin Irrit. 2 - STOT RE 2 Inhalation

target_organs

Liver,Testes

Storage Class

3 - Flammable liquids

wgk_germany

WGK 2

flash_point_f

83.3 °F - closed cup

flash_point_c

28.5 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Certificates of Analysis (COA)

Lot/Batch Number
STBK2794
STBJ3473
STBH2831
STBG6621
STBG3461V

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Fabio Camerini et al.
Environmental science and pollution research international, 20(7), 4881-4885 (2013-01-12)
A method to measure the emissive concentration of 5-ethylidene-2-norbornene (ENB), a reactive compound used in industrial synthesis of terpolymers, has been developed. The starting points for the development of the presented method are European and Italian reference methods for the
Lee JK, et al.
Macromolecular Research, 12(5), 2004-2004 (2004)
B Ballantyne et al.
Journal of applied toxicology : JAT, 17(4), 197-210 (1997-07-01)
5-Ethylidene-2-norbornene (ENB) is an industrial chemical whose physical properties indicate a likelihood for vapor exposure to humans. The potential for target organ or cumulative toxicity was investigated in rats exposed for 6 h per day for 9 days over an
5-Ethylidene-2-norbornene.
B Ballantyne et al.
Journal of applied toxicology : JAT, 19(4), 291-294 (1999-08-10)
Carolyn Lee et al.
Chemosphere, 56(3), 285-297 (2004-06-03)
Several predictive models were used to assess aquatic exposure, persistence (P) and potential for long-range transport (LRT) of 5-ethylidene-2-norbornene (ENB). Such estimations are components of the assessment process for persistent, bioaccumulative and toxic (PBT) substances, which are also referred to
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