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Merck
CN

151467

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
NACRES:
NA.22
PubChem Substance ID:
24849136
UNSPSC Code:
12352100
EC Number:
240-347-7
MDL number:
MFCD00167576
Assay:
99%
Form:
liquid

Key Documents

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InChI key

OJOWICOBYCXEKR-WHZSQGQPSA-N

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

SMILES string

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

vapor density

4.1 (vs air)

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.)

Quality Level

100

Related Categories

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

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

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
MKDB1333
MKCZ7295
MKCW4194
STBK2794
STBJ3473

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Lee JK, et al.
Macromolecular Research, 12(5), 2004-2004 (2004)
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
B Ballantyne et al.
Journal of applied toxicology : JAT, 17(4), 211-221 (1997-07-01)
The acute toxicity and primary irritancy of the industrial chemicals 5-ethylidene-2-norbornene (ENB) and 5-vinyl-2-norbornene (VNB) were studied. They are of moderate acute peroral toxicity in the rat, with LD50 values for ENB of 2.54 (male) and 5.66 (female) ml kg(-1)
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
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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