Direct searches for chemical species & Indirect searches based on related data. The data provided are from collections maintained by the NIST Standard Reference Data Program and outside contributors. Data in the WebBook system are organized by chemical species.
Periodic Table of the Elements
Atomic & Molecular Spectroscopy Data
Atomic and Molecular Data
X-Ray & Gamma-Ray Data
Radiation Dosimetry Data
Nuclear Physics Data
Condensed Matter Physics Data
A database of physical, chemical, health and safety, regulatory and environmental data on over 100 common organic solvents, provided by the National Center for Manufacturing Sciences, searchable by name, formula, CAS Registry Number, property data values
Information on elements, compounds, periodicity, and chemistry books. For each element, key information, history, contents, uses, properties, NMR and isotopes, structure, biological and geological information and more. Lots of images, structural models & graphics.
Developed at the University of California, Berkeley, and Lawrence Berkeley Laboratory, CPDB provides standardized analyses of the results of 6540 chronic, long-term animal cancer tests that have been conducted since the 1950's and reported in the general published literature or by the National Cancer Institute and the National Toxicology Program.
FreeFullPDF is a search engine for finding free full text of scientific articles in PDF Format. This search engine indexes more than 80 million free references (mostly to journal articles, theses, patents and posters).