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Physical Properties Databases & Web Sites
Cambridge Crystallographic Data Centre
Dedicated to the advancement of chemistry and crystallography for the public benefit through providing high-quality information services and software
Chemical information provided by the National Library of Medicine
The richest single source of structure-based chemistry information
CSD Teaching Database
A free 500-structure subset of the Cambridge Structural Database (CSD).
Landolt-Börnstein Substance / Property Index
The keyword search on Landolt-Börnstein Substance / Property Index is the quickest and most convenient way to find information about substances and related properties.
NIST Chemistry Webbook
Thermodynamic and spectral data on thousands of compounds from the National Institute of Standards and Technology
NIST Physical Reference Data
Many tables of properties and spectra from the National Institute of Standards and Technology.
Physical Properties Sources Index (PPSI)
The physical properties source index lists recommended databases, handbooks, and websites (data, definition, measurement) for physico-chemical and other material properties, from the Swiss Federal Institute of Technology.
Properties of Organic Compounds This link opens in a new window
A database containing the most commonly sought organic compounds, featuring physical data, spectral data, and structures.
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(Taylor & Francis/CRC Press)