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1,2,4-TRIAZOLEICSC: 0682
April 2007
CAS #: 288-88-0s-Triazole
Pyrrodiazole
1H-1,2,4-Triazole
EINECS #: 206-022-9

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Finely dispersed particles form explosive mixtures in air.  NO open flames.  Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.  Use water spray, powder, foam, carbon dioxide.   

See EFFECTS OF LONG-TERM OR REPEATED EXPOSURE. PREVENT DISPERSION OF DUST! AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation   Use local exhaust or breathing protection.  Fresh air, rest. 
Skin   Protective gloves.  Remove contaminated clothes. Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Redness. Pain.  Wear safety goggles.  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 CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

excl mark;warncancer;health haz
WARNING
Harmful if swallowed
Causes eye irritation
Suspected of damaging fertility or the unborn child
Harmful to aquatic life 

Transportation
UN Classification
 

STORAGE
Separated from strong oxidants and strong acids. Store in an area without drain or sewer access. 
PACKAGING
 
1,2,4-TRIAZOLE ICSC: 0682
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
BROWN SOLID IN VARIOUS FORMS WITH CHARACTERISTIC ODOUR. 

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

Chemical dangers
May explode on heating. Decomposes on heating. This produces toxic fumes including nitrogen oxides, ammonia and hydrogen cyanide. Reacts with strong acids and strong oxidants. 

Formula: C2H3N3
Molecular mass: 69.1
Boiling point: 260°C
Decomposes at 290°C
Melting point: 120-121°C
Density: g/cm³
Solubility in water, g/100ml at 20°C: 125
Vapour pressure, Pa at 20°C:
Flash point: 170°C c.c.
Auto-ignition temperature: 490°C
Octanol/water partition coefficient as log Pow: -0.6  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body in hazardous amounts by ingestion. The substance can be absorbed into the body by inhalation and through the skin. 

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

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed. 

Effects of long-term or repeated exposure
Animal tests show that this substance possibly causes toxicity to human reproduction or development. 


Occupational exposure limits
MAK sensitization of skin (SH) 

ENVIRONMENT
The substance is harmful to aquatic organisms. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal. 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn; R: 22-36-63; S: (2)-36/37 

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       Toxicological Abbreviations