National Toxicology Program

National Toxicology Program

Testing Status of 1,2,4-trimethylbenzene - 15005


CASRN: 95-63-6

Formula: C9-H12

Synonyms/Common Names

  • C9 Alkylbenzenes

Known Uses

Sterilizing catgut ... solvent in manufacture of dyes, perfumes and resins; solvent for liquid scintillation counting solutions Pseudocumene is a starting material for dyes, pharmaceuticals and, especially, for trimellitic anhydride, which is then converted to heat-resistant polyamideimides and polyesterimides.

Chemical Properties

Toxicity Effects (HSDB)

Short-Term Toxicity

  • 13 weeks (Inhalation)  (C15005)  Assigned 
    • Rats: Harlan Sprague-Dawley; Mice: B6C3F1/N
    • Dose: M: 0, 100, 300, 600, 1200, or 1800 pm. R: 0, 30, 100, 300, 600, or 1200 ppm.
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.