Trimellitic anhydride
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Synonyms & Trade Names
1,2,4-Benzenetricarboxylic anhydride, 4-Carboxyphthalic anhydride, TMA [Trimellitic anhydride], TMAN, Trimellic acid anhydride [Note: TMA is also a synonym for Trimethylamine.]Exposure Limits
NIOSH REL
TWA 0.005 ppm (0.04 mg/m3) Should be handled in the workplace as an extremely toxic substance.OSHA PEL
none See Appendix GPhysical Description
Colorless solid.Molecular Weight
192.1Boiling Point
?Melting Point
322°FSolubility
?Vapor Pressure
0.000004 mmHgIonization Potential
?Specific Gravity
?Flash Point
NAUpper Exposive Limit
NALower Explosive Limit
NA
Combustible Solid
Incompatibilities & Reactivities
None reportedExposure Routes
inhalation, ingestion, skin and/or eye contactSymptoms
irritation eyes, skin, nose, respiratory system; pulmonary edema, resp sensitization; rhinitis, asthma, cough, wheezing, dyspnea (breathing difficulty), malaise (vague feeling of discomfort), fever, muscle aches, sneezingTarget Organs
Eyes, skin, respiratory systemPersonal Protection/Sanitation
(See protection codes)Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:Daily
First Aid
(See procedures)Eye:Irrigate immediately
Skin:Soap wash
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations
Not available.
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division