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2-AMINOPYRIDINEICSC: 0214
o-Aminopyridine
alpha-Aminopyridine
April 2004
CAS #: 504-29-0
UN #: 2671
EC Number: 207-988-4

  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, alcohol-resistant foam, carbon dioxide.   

 STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS PREVENTION FIRST AID
Inhalation Convulsions. Dizziness. Headache. Nausea. Shortness of breath. Weakness.  Use local exhaust or breathing protection.  Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness. Further see Inhalation.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Redness.  Wear face shield 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 See Inhalation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Give a slurry of activated charcoal in 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. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: II 

STORAGE
Separated from food and feedstuffs, strong oxidants and strong acids. 
PACKAGING
Airtight.
Do not transport with food and feedstuffs. 
2-AMINOPYRIDINE ICSC: 0214
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS OR WHITE POWDER OR CRYSTALS WITH CHARACTERISTIC ODOUR. 

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

Chemical dangers
Decomposes on burning. This produces nitrogen oxides. Reacts with strong oxidants. This generates fire and explosion hazard. The solution in water is a strong base. It reacts violently with acid and is corrosive. 

Formula: C5H6N2 / NH2C5H4N
Molecular mass: 94.1
Boiling point: 211°C
Melting point: 58°C
Solubility in water: very good
Vapour pressure, kPa at 25°C: 0.8
Relative vapour density (air = 1): 3.2
Flash point: 68°C c.c.
Octanol/water partition coefficient as log Pow: 0.49  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is irritating to the eyes and skin. The substance may cause effects on the central nervous system. This may result in convulsions and respiratory depression. Exposure could cause an increase in blood pressure. Exposure far above the OEL could cause death. 

Inhalation risk
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
TLV: 0,5 ppm as TWA 

ENVIRONMENT
The substance is toxic to aquatic organisms. 

NOTES
There is no odour warning even when toxic concentrations are present.
The relation between odour and the occupational exposure limit cannot be indicated. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations