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PYROGALLIC ACIDICSC: 0770
April 2006
CAS #: 87-66-11,2,3-Benzenetriol
1,2,3-Trihydroxybenzene
Pyrogallol
EINECS #: 201-762-9

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible.  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, foam, dry powder, carbon dioxide.   

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Sore throat.  Use local exhaust or breathing protection.  Fresh air, rest. Seek medical attention if you feel unwell. 
Skin Redness.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
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 Vomiting. Diarrhoea.  Do not eat, drink, or smoke during work.  Rinse mouth. 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 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 serious eye irritation
Suspected of causing genetic defects 

Transportation
UN Classification
 

STORAGE
Separated from strong oxidants and strong bases. 
PACKAGING
 
PYROGALLIC ACID ICSC: 0770
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE SOLID IN VARIOUS FORMS. TURNS GREY ON EXPOSURE TO LIGHT AND AIR. 

Physical dangers
 

Chemical dangers
The solution in water is a weak acid. Reacts with oxidants and bases. 

Formula: C6H6O3 / C6H3(OH)3
Molecular mass: 126.1
Boiling point: 309°C
Melting point: 131-134°C
Relative density (water = 1): 1.45
Solubility in water, g/100ml at 20°C: 60 (good)
Vapour pressure, kPa at 168°C: 1.33
Octanol/water partition coefficient as log Pow: 0.970 (estimated) 


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is irritating to the eyes and respiratory tract. The substance is mildly irritating to the skin. 

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

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


Occupational exposure limits
 

ENVIRONMENT
The substance is harmful to aquatic organisms. 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn; R: 20/21/22-68-52/53; S: (2)-36/37-61 

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    See Also:
       Toxicological Abbreviations