Chemistry

Alphabetical list.

Providing trusted health information to prevent harmful exposures and diseases related to toxic substances.

Health and safety information on household products. ~ U.S. Dept of Health & Human Svcs.

Provides thermochemical, thermophysical, and ion energetics data compiled by NIST under the Standard Reference Data Program.

Weights and measures from the National Institute of Standards and Technology.

Searches over 42 databases and over 2000 selected websites from 14 federal agencies, offering 200 million pages of authoritative U.S. government science information, including research and developmental results.