Agent Name

Trimellitic acid

CAS Number

528-44-9

Formula

C9-H6-O6

Major Category

Other Classes

Synonyms

1,2,4-Tricarboxybenzene; 1,3,4-Benzenetricarboxylic acid; 1,4,5-Benzenetricarboxylic acid; 4-Carboxyphthalic acid; 1,2,4-Benzenetricarboxylic acid; [ChemIDplus] TMLA; [Reference #1] Benzene-1,2,4-tricarboxylic acid; [Sigma-Aldrich MSDS]

Category

Organic Acids

Description

Solid; [Merck Index] White powder; [Sigma-Aldrich MSDS]

Sources/Uses

Used as an intermediate for resins, plasticizers, dyes, inks, and adhesives; [Merck Index] Used strictly to make trimellitic anhydride; [Reference #1]

Comments

Trimellitic anhydride demonstrates no evidence of teratogenicity or fetotoxicity in experimental animals; A mild skin and severe eye irritant; Structural analog of trimellitic anhydride (TMA); TMA rapidly forms trimellitic acid in aqueous environments and in conditions used to test its toxicity; Although similar in systemic toxicity, trimellitic does not share the sensitization potential of TMA; [Reference #1] A skin and strong eye irritant; [Sigma-Aldrich MSDS] See "Trimellitic anhydride." See "Trimethyl 1,2,4-benzenetricarboxylate."

Reference Link

OECD SIDS: Trimellitic Anhydride and Trimellitic Acid - 2002

Exposure Assessment
Vapor Pressure

2.88E-8 mm Hg

Lethal Concentration

LC50 (rat) > 3,750 mg/m3

Links to Other NLM Databases
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