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iso-PHTHALONITRILE
ICSC: 1583
Peer-Review Status: 20.04.2005 Validated
1,3-Benzenedicarbonitrile
Isophthalodinitrile
m-Dicyanobenzene 
CAS #: 626-17-5 RTECS #: CZ1900000
UN #: 3276
EINECS #: 210-933-7
    Formula: C8H4N2
Molecular mass: 128.14

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames.  Use water spray, powder, foam, carbon dioxide. 
EXPLOSION Finely dispersed particles form explosive mixtures in air.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent deposition of dust.  In case of fire: keep cylinder cool by spraying with water. 
 
EXPOSURE   PREVENT DISPERSION OF DUST!   
Inhalation Cough.  Avoid inhalation of dust.  Fresh air, rest. 
Skin     Rinse and then wash skin with water and soap. 
Eyes Redness.  Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Diarrhoea.  Do not eat, drink, or smoke during work. Wash hands before eating.  Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting.  Do not transport with food and feedstuffs. 
EC Classification
 
UN Classification
UN Hazard Class: 6.1; UN Pack Group: III 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-GT1-III.  Separated from strong oxidants and food and feedstuffs. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS-TO-WHITE CRYSTALLINE POWDER WITH CHARACTERISTIC ODOUR. 

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air. 

Chemical dangers
Reacts with strong oxidants. Decomposes on heating. This produces toxic gases including hydrogen cyanide. On combustion, forms nitrogen oxides. 

Occupational exposure limits
TLV: 5mg/m³ as TWA; (ACGIH 2004). 

Routes of exposure
 

Inhalation risk
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered. 

Effects of short-term exposure
The substance is irritating to the eyes. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Sublimation point: >162°C
Density: 1.3 g/cm³
Solubility in water, g/100ml at 20°C: 0.07
Vapour pressure: 1.33 Pa
Relative vapour density (air = 1): 4.42
Flash point: >150°C
Octanol/water partition coefficient as log Pow: 0.39  
 

NOTES
Health effects of exposure to the substance have not been investigated adequately. 

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