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BENZOTRIAZOLE
ICSC: 1091
Peer-Review Status: 25.11.1998 Validated
1H-Benzotriazole
1,2,3-Triazaindene
1,2,3-Benzotriazole
Azimidobenzene 
CAS #: 95-14-7 RTECS #: DM1225000
EINECS #: 202-394-1
    Formula: C6H5N3
Molecular mass: 119.1

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible.  NO open flames.  Use water spray. 
EXPLOSION Finely dispersed particles form explosive mixtures in air.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent deposition of dust.   
 
EXPOSURE   PREVENT DISPERSION OF DUST! STRICT HYGIENE!   
Inhalation   Use local exhaust.  Fresh air, rest. 
Skin   Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness. Pain.  Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment. Personal protection: particulate filter respirator adapted to the airborne concentration of the substance.   
EC Classification
 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
  Well closed. 

IMPORTANT DATA
Physical State; Appearance
WHITE-TO-BROWN CRYSTALLINE POWDER. 

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

Chemical dangers
Decomposes on heating. This produces toxic fumes including aniline and nitrobenzene. The solution in water is a weak acid. May explode on vacuum distillation. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. 

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

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

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point at 2 kPa: 204°C
Sublimation point: 200°C
Decomposes at 260°C
Melting point: 98.5°C
Density: 1.36 g/cm³
Solubility in water, g/100ml: 2 (moderate)
Vapour pressure, Pa at 20°C: 5
Flash point: 190-195°C o.c.
Auto-ignition temperature: 210°C  
The substance is harmful to aquatic organisms. 

NOTES
Health effects of exposure to the substance have not been investigated adequately.
Cobratec #99, U-6233 are trade names.
Card has been partially updated in November 2008: see Occupational Exposure Limits, Ingestion First Aid. 

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