The values of the constants provided at this site are recommended for international use by CODATA and are the latest available. Termed the ""1998 CODATA recommended values,"" they are generally recognized worldwide for use in all fields of science and technology. The values became available in July 1999 and replaced the 1986 CODATA set. They are based on all of the data available through 31 December 1998. A detailed description of the data and the analysis that led to these values may be found in the Journal of Physical and Chemical Reference Data, Vol. 28, No. 6, pp. 1713-1852, 1999 and in the Reviews of Modern Physics, Vol. 72, No. 2, pp. 351-495, 2000. "

Общедоступный вариант известной термохимической БД, подготовленной поддерживаемой ТЕРМОЦЕНТРОМ им. акад. В.П. Глушко .
Включает таблицы для примерно 300 веществ. Позволяет проводить расчеты тепловых процессов и химического равновесия при невысоких давлениях.

ThermoDex contains annotated records that describe compilations of thermodynamic and physical property data for chemical compounds and other substances. Most of the compilations included are printed books; some are freely available Web-based databases. ThermoDex is a "finding aid" designed to save you time in searching through numerous handbooks you might have in your library or lab. It enables you to enter both a type of compound and a property, and it the returns a list of handbooks that might contain these data.

The NASA Scientific and Technical Information (STI) Programs mission is to collect, archive, and disseminate NASA aerospace information, and locate domestic and international STI pertinent to NASAs missions and Strategic Enterprises. Examples of NASAs STI include research reports, journal articles, conference and meeting papers, technical videos, mission-related operational documents, and preliminary data. NASAs technical information is available via the NASA Technical Report Server (NTRS) is to provide students, educators, and the public access to NASAs technical literature. NTRS also collects scientific and technical information from sites external to NASA to broaden the scope of information available to users. NTRSs Simple Search searches for NASA information only and its Advanced Search can search for NASA and non-NASA information. Most of the NASA information does not have full-text document images and documents can be ordered by contacting the NASA Center for AeroSpace Information.

The heart of MatWeb is a searchable database of material data sheets, including property information on thermoplastic and thermoset polymers such as ABS, nylon, polycarbonate, polyester, polyethylene and polypropylene; metals such as aluminum, cobalt, copper, lead, magnesium, nickel, steel, superalloys, titanium and zinc alloys; ceramics; plus semiconductors, fibers, and other engineering materials. MatWeb is freely available and does not require registration. You can still access all of the features that have always been available. However, advanced features are only available to our Registered and Premium users