Chemdex provides a directory of chemistry on the internet. Chemfinder provides a search mechanism for finding information about chemical compounds. The EPA's Office of Enforcement and Compliance Assurance developed this series of profiles or notebooks containing air, water and land pollutant release data on selected major industries. Environmental experts from both inside and outside the EPA have thoroughly reviewed the data. Extoxnet is a database designed by toxicologists and chemists to provide information on pesticides.
Galaxy provides links to sites in a number of chemistry disciplines.
Internet Detective is an interactive tutorial on evaluating the quality of Internet resources. Links for Chemists is an index with over 5800 links to chemistry websites. Molecular Weight Calculation is a simple calculator for determining the molecular weights of compounds. National Academy Press provides the full text of a number of chemistry related publications. Over a million citations from about 1000 journals are available.