1,4-Dicyano-2-butene

  • 3-Hexenedinitrile
  • Hex-3-enedinitrile
  • b-Hydromucononitrile
Formula
C6H6N2
Structure
Description
Tan to brown crystals
Uses
Chemical intermediate for adiponitrile (as isomeric mixt).

Registry Numbers and Inventories.
CAS
1119-85-3
EC (EINECS/ELINCS)
214-287-7
RTECS
MP6750000
RTECS class
Other
UN (DOT)
2811
Beilstein/Gmelin
1720228
Beilstein Reference
4-02-00-02238
Swiss Giftliste 1
G-5374
Canada DSL/NDSL
NDSL
US TSCA
Listed

Properties.
Formula
C6H6N2
Formula mass
106.14
Melting point, °C
73 - 75
Boiling point, °C
290
Vapor pressure, mmHg
0.0022 (25 C)
Density
0.953 g/cm3 (80 C)
Solubility in water
Very soluble
Partition coefficient, pKow
-0.25
Heat of vaporization
50.8 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
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 safety goggles, protective clothing and gloves.
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
ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
No data.
Incompatibilities
Avoid contact of strong acids, strong oxidizing agents, strong bases, strong reducing agents.

Fire.
Flash Point,°C
146
Upper exp. limit, %
11.6
Lower exp. limit, %
1.4
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
3
Exposure effects
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
Harmful if inhaled.
   Skin
Harmful if absorbed through the skin.
   Eyes
May cause irritation.

First aid
 
   Ingestion
Get medical aid. Wash mouth out with water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower lids. Get medical aid.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III