2,5-Norbornadiene

  • Bicycloheptadiene
  • Bicyclo[2.2.1]hepta-2,5-diene
  • 8,9,10-Trinorborna-2,5-diene
Formula
C7H8
Structure
Description
A colorless liquid with a hydrocarbon odor.
Uses
Used in a number of high technology applications in the fields of material science agriculture and pharmaceuticals.

Registry Numbers and Inventories.
CAS
121-46-0
EC (EINECS/ELINCS)
204-472-0
EC Class
highly flammable, harmful
S 16 23 33
RTECS
RB6535000
RTECS class
Other
UN (DOT)
2251
Beilstein/Gmelin
506224
Beilstein Reference
4-05-00-00879
Swiss Giftliste 1
G-8606
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C7H8
Formula mass
92.14
Melting point, °C
-20
Boiling point, °C
90
Vapor pressure, mmHg
66 (25 C)
Density
0.9064 g/cm3 (20 C)
Solubility in water
Slightly soluble
Viscosity
0.85 mPas 20 C
Refractive index
1.4693 (20 C)
Partition coefficient, pKow
2.67
Heat of vaporization
34.1 kJ/mol

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Keep under a nitrogen blanket. Flammables-area.
Handling
Wash thoroughly after handling. Wash hands before eating. Use only in a well ventilated area. Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Do not get on skin or in eyes. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition.
Disposal code
1
Stability
Unstable.
Incompatibilities
Strong acids, strong bases, strong oxidizing agents, and air.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
-11
Autoignition, °C
350
Upper exp. limit, %
6.3
Lower exp. limit, %
1.1
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Extinguishing media: Use foam, dry chemical, or carbon dioxide.
Fire potential
HIGHLY FLAMMABLE.
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. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
3
 
 
Reactivity
1
 

Health.
Poison_Class
-
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
May cause respiratory tract irritation.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2251
Response guide
Hazard class
3
Packing Group
II
 
USCG CHRIS Code
HFN
 
HS Code
2902 19 90
 
Std. Transport #
4907891