The USEPA has just opened up to public access a database on chemical hazard, exposure and toxicity data. The database, called ToxRefDB (i.e., Toxicity Reference Database), provides detailed chemical toxicity data that is easy for anyone to access.
Find it here: ToxRefDB
The database is part of an online data warehouse called ACToR (Aggregated Computational Toxicology Resource), that collects data from about 500 public sources on tens of thousands of environmentally relevant chemicals, including several hundred in ToxRefDB.
It also connects to another EPA chemical screening tool called ToxCast, a "multi-year, multi-million dollar effort that uses advanced science tools to help efficiently (~$20K per chemical) understand biological processes impacted by chemicals that may lead to adverse health effects."
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