Trimellitic anhydride |
Synonyms & Trade Names 1,2,4-Benzenetricarboxylic anhydride; 4-Carboxyphthalic anhydride; TMA; TMAN; Trimellic acid anhydride [Note: TMA is also a synonym for Trimethylamine.] |
CAS No. 552-30-7 |
RTECS No. DC2050000 |
DOT ID & Guide |
FormulaC9H4O5 |
Conversion 1 ppm = 7.86 mg/m3 |
IDLH N.D.
See: IDLH INDEX |
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 |
Measurement Methods
NIOSH 5036;
OSHA 98
See: NMAM or OSHA Methods |
Physical Description Colorless solid. |
MW: 192.1 |
BP: ? |
MLT: 322°F |
Sol: ? |
VP: 0.000004 mmHg |
IP: ? |
Sp.Gr: ? |
Fl.P: NA |
UEL: NA |
LEL: NA |
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| 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 |
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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
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations Not available.
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0345
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