5-ETHYLIDENE-2-NORBORNENE

PRODUCT IDENTIFICATION
CAS NO. 16219-75-3

5-ETHYLIDENE-2-NORBORNENE
EINECS NO. 240-347-7
FORMULA C9H12
MOL WT. 120.19

H.S. CODE

  
TOXICITY  
SYNONYMS 5-Ethylidenebicyclo(2,2,1)hep-2-ene; Ethylidene norbornene;
ENB; Bicyclo(2.2.1)hept-2-ene,5-ethylidene;
DERIVATION

 

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE clear colorless to yellow liquid
MELTING POINT -80 C
BOILING POINT 148 C
SPECIFIC GRAVITY 0.9
SOLUBILITY IN WATER

none
pH  
VAPOR DENSITY  

AUTOIGNITION

 

NFPA RATINGS

  

REFRACTIVE INDEX

 1.4895 - 1.4915
FLASH POINT 38 C
STABILITY The substance may polymerize. The substance decomposes on burning producing acrid smoke and irritating fumes. Reacts with strong oxidants.

GENERAL DESCRIPTION & APPLICATIONS
Norbornane is a saturated bicyclic hydrocarbon with chemical formula C7H12( a crystalline compound with melting point 88 C). The molecule consists of a cyclohexane ring bridged with a methylene group in the1,4- position. Norbornene (norbornylene or norcamphene) is comprised of a cyclohexene ring (carries a double bond). Norbornadiene carries two double bonds. Double bond induces significant ring strain and high reactivity.

IUPAC names
Norbornane : Bicyclo[2.2.1]heptane
Norbornene : Bicyclo[2.2.1]-2-heptene
Norbornadiene: Bicyclo[2.2.1]hepta-2,5-diene

Norbornene and its derivatives are made by a Diels-Alder reaction of cyclopentadiene and alkenes. They are monomers for ring-opening polymerizations and vinyl-addition polymerizations. to prepare polymers of high glass transition temperatures and high optical clarity. Norbornene turns into a cyclic olefin copolymer when combined with ethylene. 5-Ethylidene-2-norbornene, derived from cyclopentadiene and butadiene, has two double bonds for subsequent reaction. and used predominantly as a diene monomer in the manufacture of EPDM rubber (Ethylene-Propylene-Diene-Monomer). Norbornene derivatives are also used to make intermediates for pharmaceuticals , pesticides, fragrances and in general organic synthesis. Norbornadiene is a starting material for the synthesis of polycyclic aromatic hydrocarbons including amantanes and it is used as a catalytic transfer agent.
SALES SPECIFICATION

APPEARANCE

clear colorless to yellow liquid

PURITY

99.0% min

COLOR, APHA

50 max
STABILIZER 100 ppm p-tert.-butylcatechol

TRANSPORTATION
PACKING  
HAZARD CLASS 6.1 (Packing Group: II)
UN NO.

2929
OTHER INFORMATION
Hazard Symbols: XN, Risk Phrases: 10-22-36/37/38,  Safety Phrases: 16-26-36/37/39