With Google Trends, you can compare the world’s interest in your favorite topics. Enter up to five topics and see how often they’ve been searched on Google over time.
The Chemical Database database will allow the user to retreive information for any of 25,496 hazardous chemicals or 'generic' entries based on a keyword search. Potential keywords include names, formula and registry numbers (CAS, DOT, RTECS, EINECS, Beilstein and Merck). Formula are represented in Hill format for searching and a more descriptive format for viewing.
DOEpatents, Patents, Department of Energy
Energy Citation Database