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benzene-1,2,4-tricarboxylic acid 1,2-anhydride; trimellitic anhydride

CAS 552-30-7 · C9H4O5
Hazard class
Danger — Irritant / harmful, Corrosive, Health hazard
Pictograms
Irritant / harmfulCorrosiveHealth hazard
H-statements
  • H335 May cause respiratory irritation
  • H318 Causes serious eye damage
  • H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
  • H317 May cause an allergic skin reaction
Common uses (US EPA CDR)
IntermediateMonomersHardener
Workplace 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
IDLH N.D.
Occupational exposure limits — NIOSH Pocket Guide.
Synonyms
TRIMELLITIC ANHYDRIDE · 1,2,4-Benzenetricarboxylic anhydride · Anhydrotrimellitic acid · Trimellitic acid anhydride · 4-Carboxyphthalic anhydride · TMAN · Trimellitic acid 1,2-anhydride · Trimellic acid anhydride
Molecular weight
192.12 g/mol
Browse similar
Irritant / harmful · Corrosive · Health hazard
Data source
Harmonised classification ECHA — EU CLP Annex VI
Legally binding EU classification adopted by ECHA under CLP Annex VI — the highest-confidence GHS source.
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GHS/CLP classification from authoritative registries (ECHA Annex VI, PubChem). SNRL is a free chemical safety search. Browse categories · API · Console
Guide only. This information is compiled from published safety data sheets and public regulatory registries and is believed correct at the date of publication shown. It is not all-inclusive and shall be used only as a guide. It does not replace the manufacturer’s current Safety Data Sheet, which governs in all cases. SNRL shall not be held liable for any injury, loss or damage resulting from handling of, or contact with, any product listed.