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TEREPHTHALIC ACID
ICSC: 0330
Peer-Review Status: 22.04.1994 Validated
para-Phthalic acid
1,4-Benzenedicarboxylic acid 
CAS #: 100-21-0 RTECS #: WZ0875000
EINECS #: 202-830-0
 		    Formula: C8H6O4 / C6H4(COOH)2
Molecular mass: 166.1

TYPES OF
HAZARD /
EXPOSURE 		ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible.  NO open flames.  Use water spray, foam, 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.  In case of fire: keep drums, etc., cool by spraying with water. 
 
EXPOSURE      
Inhalation Cough.  Use local exhaust or breathing protection.  Fresh air, rest. 
Skin Redness.  Protective gloves.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Redness.  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. Wash hands before eating.  Rinse mouth. 

SPILLAGE DISPOSAL
 		PACKAGING & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. 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
 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H0; F1; R0.  Separated from strong oxidants. 

IMPORTANT DATA
Physical State; Appearance
WHITE CRYSTALLINE POWDER. 

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

Chemical dangers
Reacts violently with strong oxidants. 

Occupational exposure limits
TLV: 10mg/m³ as TWA; (ACGIH 2004).
MAK (inhalable fraction): 0.1 mg/m³; Peak limitation category: I(2); Pregnancy risk group: C; (DFG 2006). 

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 when dispersed. 

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

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Sublimation point: 402°C
Relative density (water = 1): 1.51
Solubility in water, g/100ml at 20°C: 0.28
Vapour pressure, Pa at 20°C: <1
Flash point: 260°C
Auto-ignition temperature: 496°C
Octanol/water partition coefficient as log Pow: 1.96   		 

NOTES
Card has been partly updated in August 2006.
See sections Occupational Exposure Limits. 

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
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    See Also:
       Toxicological Abbreviations