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AZOBIS(ISOBUTYRONITRILE)ICSC: 1090
April 2004
CAS #: 78-67-12,2'-Azobis(2-methylpropanenitrile)
2,2'-Azodiisobutyronitrile
2,2'-Dicyano-2,2'-azopropane
2,2'-Dimethyl-2,2'azodipropionitrile
UN #: 3234
EINECS #: 201-132-3

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Highly flammable.  Finely dispersed particles form explosive mixtures in air. Risk of fire and explosion when dissolving in organic solvents. Explosive.  NO open flames, NO sparks and NO smoking.  Do NOT expose to friction or shock. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust. Prevent build-up of electrostatic charges (e.g., by grounding).  Use water in large amounts, water spray.  In case of fire: keep drums, etc., cool by spraying with water. 

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation   Use local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin   Protective gloves.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes   Wear safety goggles or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Headache. Nausea. Weakness. Convulsions.  Do not eat, drink, or smoke during work.  Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Give a slurry of activated charcoal in water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Consult an expert! Personal protection: filter respirator for organic gases and particulates adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Remove all ignition sources. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 4.1 

STORAGE
Fireproof. Cool. Separated from strong oxidants and incompatible materials. See Chemical Dangers. 
PACKAGING
 
AZOBIS(ISOBUTYRONITRILE) ICSC: 1090
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE POWDER. 

Physical dangers
If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc. 

Chemical dangers
Decomposes on warming. This produces toxic fumes of tetramethylsuccinonitrile (see ICSC 1121) and cyanide. May decompose explosively on shock, friction or concussion. May explode on heating. Reacts violently with alcohols, oxidants, ketones such as acetone, aldehydes and hydrocarbons such as heptane. This generates fire and explosion hazard. 

Formula: C8H12N4 / (CH3)2(CN)CN=NC(CN)(CH3)2
Molecular mass: 164.2
Density: 1.1 g/cm³
Solubility in water at 20°C: none
Vapour pressure, Pa at 20°C: <1
Auto-ignition temperature: 64°C  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by ingestion. 

Effects of short-term exposure
The substance may cause effects on the central nervous system. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. 

Effects of long-term or repeated exposure
The substance may have effects on the liver. 


Occupational exposure limits
 

ENVIRONMENT
The substance is harmful to aquatic organisms. The substance may cause long-term effects in the aquatic environment. 

NOTES
Temperature of decomposition unknown in literature.
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: E, Xn; R: 2-11-20/22-52/53; S: (2)-39-41-47-61 

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       Toxicological Abbreviations