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PYROGALLIC ACID
ICSC: 0770
Peer-Review Status: 04.04.2006 Validated
1,2,3-Benzenetriol
1,2,3-Trihydroxybenzene
Pyrogallol 
CAS #: 87-66-1 RTECS #: UX2800000
EC #: 604-009-00-6
EINECS #: 201-762-9
    Formula: C6H6O3 / C6H3(OH)3
Molecular mass: 126.1

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible.  NO open flames.  Use water, foam, dry powder, carbon dioxide. 
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!   
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
PACKAGING & 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.   
EC Classification
Symbol: Xn; R: 20/21/22-68-52/53; S: (2)-36/37-61 
UN Classification
 
GHS Classification
Signal: Warning
Harmful if swallowed
Causes serious eye irritation
Suspected of causing genetic defects 
excl mark;warncancer;health haz

EMERGENCY RESPONSE SAFE STORAGE
  Separated from strong oxidants and strong bases. 

IMPORTANT DATA
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. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

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

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

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

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


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
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) 
The substance is harmful to aquatic organisms. 

NOTES
Card has been partially updated in August 2007: see GHS classification. 

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