TOXNET毒理学文献和事实数据库由NLM主办，其通过该图书馆的专业化信息服务部的毒理学和环境健康信息项目建成的一系列的有关于毒理学，有害化学品和相关领域的文献数据库。所有内容均可免费获得。该网站包括文献和事实两部分。

TOXNET,founded by NLM, which is a cluster of databases on toxicology, hazardous chemicals, and related areas from the toxicology and health programs sponsored by special institute of service for chemicals.All resources allow free access. It is composed of two parts:publications and chemical copy.