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AZOBIS(ISOBUTYRONITRILE)
ICSC: 1090
Peer-Review Status: 20.04.2004 Validated
2,2'-Azobis(2-methylpropanenitrile)
2,2'-Azodiisobutyronitrile
2,2'-Dicyano-2,2'-azopropane
2,2'-Dimethyl-2,2'azodipropionitrile 
CAS #: 78-67-1 RTECS #: UG0800000
UN #: 3234
EC #: 608-019-00-1
EINECS #: 201-132-3
    Formula: C8H12N4 / (CH3)2(CN)CN=NC(CN)(CH3)2
Molecular mass: 164.2

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Highly flammable.  NO open flames, NO sparks and NO smoking.  Use water in large amounts, water spray. 
EXPLOSION Finely dispersed particles form explosive mixtures in air. Risk of fire and explosion when dissolving in organic solvents. Explosive.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent deposition of dust. Prevent build-up of electrostatic charges (e.g., by grounding). Do NOT expose to friction or shock.  In case of fire: keep drums, etc., cool by spraying with water. 
 
EXPOSURE   PREVENT DISPERSION OF DUST!   
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
PACKAGING & 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.   
EC Classification
Symbol: E, Xn; R: 2-11-20/22-52/53; S: (2)-39-41-47-61 
UN Classification
UN Hazard Class: 4.1 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H3; F-; R2.
Transport Emergency Card: TEC (R)-41GSR2-S. 
Fireproof. Cool. Separated from strong oxidants and incompatible materials. See Chemical Dangers. 

IMPORTANT DATA
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. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

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

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

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

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


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Density: 1.1 g/cm³
Solubility in water at 20°C: none
Vapour pressure, Pa at 20°C: <1
Auto-ignition temperature: 64°C  
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.
Aceto azib, ADZN, AIBN, AIVN, AZDH, CHKHZ, Genitron, Pianofor AN, Porofor N, Porofor-57 and Vazo (64) are trade names. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations