MinireviewA review of the genotoxicity of Trimethylolpropane triacrylate (cas 15625-89-5) (TMPTA)
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Add time:08/31/2019 Source:sciencedirect.com
Trimethylolpropane triacrylate (cas 15625-89-5) (TMPTA) is a trifunctional acrylate monomer which polymerizes rapidly when exposed to sources of free radicals. It is widely used as a reactive diluent and polymer building block in the formulation of overprint varnishes, inks and a variety of wood, plastic and metal coatings. TMPTA has been tested in a range of in vitro and in vivo genotoxicity tests. There is no clear evidence of induction of gene mutations by TMPTA in bacteria or mammalian cells in vitro, but there is evidence of clastogenicity from induction of small colony tk mutants in the mouse lymphoma assay, and also induction of micronuclei and chromosomal aberrations. However, TMPTA was negative in bone marrow or blood micronucleus tests in vivo following oral or repeated dermal application, and did not induce comets in bone marrow or liver of mice following intravenous administration, which would have achieved plasma (and therefore tissue) concentrations estimated to exceed those inducing clastogenic effects in vitro. It is concluded that TMPTA is not genotoxic in vivo.
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