Trimellitic anhydride
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 GMeasurement Methods
Physical Description
Colorless solid.
Molecular Weight
192.1
Boiling Point
?
Melting Point
322°F
Solubility
?
Vapor Pressure
0.000004 mmHg
Ionization Potential
?
Specific Gravity
?
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Combustible Solid
Incompatibilities & Reactivities
None reported
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
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, sneezing
Target Organs
Eyes, skin, respiratory system
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:Daily
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
Eye:Irrigate immediately
Skin:Soap wash
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations
Not available.
See also
INTRODUCTION
ICSC CARD: 0345
Page last reviewed: October 30, 2019
Content
source: National Institute for Occupational Safety and Health