1,3-CYCLOOCTADIENE Chemical Properties

Melting point:

−53-−51 °C(lit.)

Boiling point:

55 °C34 mm Hg(lit.)

Density 

0.873 g/mL at 20 °C(lit.)

refractive index 

n20/D 1.494

Flash point:

76 °F

storage temp. 

2-8°C

form 

clear liquid

color 

Colorless to Light yellow

BRN 

2321915

InChI

InChI=1S/C8H12/c1-2-4-6-8-7-5-3-1/h1-4H,5-8H2/b3-1-,4-2-

InChIKey

RRKODOZNUZCUBN-CCAGOZQPSA-N

SMILES

C1CCCCC=CC=1 |c:5,7|

CAS DataBase Reference

1700-10-3(CAS DataBase Reference)

EPA Substance Registry System

1,3-Cyclooctadiene (1700-10-3)

Safety Information

Hazard Codes 

T,Xn

Risk Statements 

10-36/38-65

Safety Statements 

26-45-62-36

RIDADR 

UN 2520 3/PG 3

WGK Germany 

3

TSCA 

TSCA listed

HS Code 

2902.19.0050

HazardClass 

3

PackingGroup 

III

Storage Class

3 - Flammable liquids

Hazard Classifications

Asp. Tox. 1
Flam. Liq. 3

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

1,3-CYCLOOCTADIENE Usage And Synthesis

Uses

1,3-Cyclooctadiene is a reagent used in the synthesis of catalytically active membranelike devices.

Uses

1,3-Cyclooctadiene has been used in the preparation of 2-cyclooct-2-en-1-yl-1,3-cyclooctadiene, a novel bicyclic triene.

General Description

Enantiodifferentiating geometrical photoisomerizations of (Z,Z)-1,3-cyclooctadiene was studied using "cyclodextrin nanosponge", as a supramolecular sensitizing host. Dendrimer-encapsulated Pd-Rh bimetallic nanoparticle catalyzed partial hydrogenation of 1,3-cyclooctadiene has been reported.

Synthesis

1,3-Cyclooctadiene is prepared by cyclodimerization of butadiene. Procedure: Prepare the catalyst (a toluene solution of triethylaluminum, P catalyst, and N catalyst) and add it to the reactor. Butadiene is added intermittently to the reactor. The temperature is slowly raised to 85??C. The reaction temperature is controlled below 110??C. Butadiene is added dropwise when the pressure is below 0.2MPa. After all butadiene is added, the mixture is held at 108??2??C for 3 hours. After reaction, it is cooled and discharged. The reaction mixture contains 84.2% 1,5-cyclooctadiene, with a butadiene conversion of 95.3%.

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