1,3-Cyclooctadiene, (Z,E)

  • (E,Z)-Cycloocta-1,3-diene
  • 1E,3Z-Cyclooctadiene
  • cis,trans-1,3-Cyclooctadiene
Formula
C8H12
Structure
Description
Colorless liquid.

Registry Numbers and Inventories.
CAS
3806-60-8
UN (DOT)
2520
Beilstein/Gmelin
2408617
Beilstein Reference
4-05-00-00402
Japan ENCS (MITI)
Listed

Properties.
Formula
C8H12
Formula mass
108.2
Melting point, °C
-87
Boiling point, °C
150
Vapor pressure, mmHg
5 (25 C)
Critical temperature
374
Critical pressure
37.3
Solubility in water
Insoluble
Refractive index
1.4975 (25 C)
Partition coefficient, pKow
3.52
Heat of vaporization
37.1 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Make no contact with the spilled material. ELIMINATE all ignition sources and ground all equipment. Stop leak if you can do it without risk. A vapor suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean non-sparking tools to collect absorbed material.
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
May react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas.
Decomposition
Oxides of carbon.

Fire.
Flash Point,°C
24
Fire fighting
Use of water spray when fighting fire may be inefficient. Small Fires: Dry chemical, carbon dioxide, water spray or regular foam. Large Fires: Water spray, fog or regular foam. Do not use straight streams.
Fire potential
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
Polymerizes easily.
   Inhalation
Vapors may cause dizziness or suffocation. May cause toxic effects. May irritate or burn.
   Skin
May irritate or burn. May cause toxic effects if absorbed through the skin.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush with running water for at least 20 minutes. Wash skin with soap and water.
   Eyes
In case of contact with substance, immediately flush with running water for at least 20 minutes.

Transport.
UN number
2520
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
HFN