Knovel is an online collection of over 600 engineering handbooks and reference sources. Search or browse individual books or search across the entire collection. Many of the handbooks in Knovel feature interactive tables and graphs and you can export data to Excel and other programs.
CAMEO Chemcials (NOAA.gov)
Chemical and physical property data compiled by the National Oceanic and Atmospheric Administration
Chemistry WebBook (NIST.gov)
Chemical and physical property data compiled by NIST under the Standard Reference Data Program.
PubChem Project (NIH.gov)
Hosted by the National Institutes of Health. Provides incredible wealth of information on the material. Results include safety/toxicity, literature links, physical data, and more.
MatWeb
Material property data on over 28,000 metals, plastics, ceramics, and composites.
Data, formulas, and other information frequently used by engineers can often be found in handbooks. Some handbooks are devoted to broad topics like Mechanical Engineering or Civil Engineering. Other handbooks are more specialized and focus on narrower topics such as piping, lighting, or quality control. Here are some important handbooks frequently used by chemical engineers.