The ACS is the principal chemistry society in the United States and one of the most important in the world. The website provides access to extensive sources of chemical information, especially ACS publications.
This site allows searches by chemical name, CAS number, molecular number, or molecular weight. Basic physical information, synonyms, DOT numbers, EPA codes, and links to additional information are returned.
The International Union of Pure and Applied Chemistry is one of the most important organizations supporting chemical research. It is especially involved in naming chemicals, chemical processes, and related matters. The site includes information on the organization's current activities and some of its documentation, including reports and supporting journal articles.
This is the website for the chemistry section of the WWW Virtual Library. It contains links to chemistry educational programs, chemical companies, chemical literature, and information sites. It is maintained by the University of Liverpool.
The MERLOT website collects online tutorials, tests, class presentations, and other types of educational material. In the Chemistry Portal materials are arranged by type of materials and chemistry field.
This site provides searchable access to the data compiled and distributed by the National Institute of Standards and Technology, such as thermochemical and thermophysical data, IR spectra, and mass spectra.
The RSC is the largest chemical research society in Europe. It supports an extensive research publication program. The website allows you to search the Society's library, and it includes links to a number of web resources.