Skip to Main Navigation
Skip to Page Content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Testing Status of Tri-m-cresyl phosphate 11037-W


CASRN: 563-04-2

Formula: C21-H21-O4-P

Synonyms/Common Names

  • Phosphoric acid, tris(3-methylphenyl)ester (9CI)

Known Uses

Plasticizer in vinyl plastics manufacture; flame-retardant; solvent for nitrocellulose; in cellulosic molding compositions; nonflammable fluid in hydraulic systems; as lead scavenger in gasoline.

Chemical Properties

Toxicity Effects (HSDB)

Special Studies

  • Absorption Disposition Metabolism Elimination (Gavage; Intravenous)  (S0051)  Completed 
    • Citation: Pharmacokinetics of three Tri-Cresyl Phosphates in the Fischer 344 male rats: Tri-Ortho-Cresyl Phosphate, Tri-Meta Cresyl Phosphate, Tri-Para-Cresyl Phosphate.
    • Male Rats: F344/N
    • Dose: gavage - 0.5, 2.0, 20.0 & 200 mg/kg Iv - 2.0 & 20.0 mk/kg.

Genetic Toxicology

  • Salmonella  (783054)  Completed 
    • Citation: Haworth, S., Lawlor, T., Mortelmans, K., Speck, W., and Zeiger, E. Salmonella mutagenicity test results for 250 chemicals Environ. Mutagen. Vol. 5 (Suppl 1) (1983) 3-142
    •  Negative