DatasetAdded By Infochimps
> Distributed Structure-Searchable Toxicity (DSSTox) Database Network is a project of EPA’s National Center for Computational Toxicology, helping to build a public data foundation for improved structure-activity and predictive toxicology capabilities. The DSSTox website provides a public forum for publishing downloadable, structure-searchable, standardized chemical structure files associated with toxicity data.
Several different datasets available from:
Files are in [Structure Data Format (SDF)](http://www.epa.gov/ncct/dsstox/MoreonSDF.html).
Not clear. From US Government so at least some of the material may be in the public domain.