Database of checked thermophysical data on over 21,000 pure substances and 100,000 mixtures, corresponding in part to the printed Chemistry Data Series (see Print Tools page). You can do a free search to see if specific data tables are available. Downloading the data is on a pay-per-view basis. Some of the older data may be found in the DECHEMA CDS volumes.
DDB is a proprietary collection of evaluated phase equilibria and transport property data for multicomponent systems. Searching is free but viewing data is on a pay per view basis. Many of these data are also available via the similar DETHERM system.
Property data of 6,600 pure compounds and 24,000 mixtures: tables of PVT properties, phase equilibria, transport and surface properties, caloric properties, acoustic, and optical properties. Free searching and preview; data available on pay-per-view or license basis. (FIZ Chemie Berlin)
Although quite dated now, in its time the ICT was the best and best-known compilation of evaluated physical, mechanical and chemical data. Some of the units used are obsolete, but it is still worth checking for hard-to-find information, especially for unusual materials, and it remains a significant work. It was prepared under the auspices of the National Research Council.
The 7-volume print set and index is available in the Chemistry Library's reference collection.
This journal, co-published by NIST and the American Institute of Physics, contains articles and monographs reporting extensive critical property data.
The NIST Data Gateway offers a keyword index to JPCRD. The site also offers free PDF reprints of selected older articles. JPCRD is fully indexed in SciFinder.
JPCRD also published a number of monographic supplements over the years. Most of these are shelved by subject in the reference or spectra collections, and are indexed in ThermoDex. Free PDF versions of most of them are available on the NIST site.
Provides thermophysical property data and calculation methods for hydrocarbons, light gases, polymers and electrolyte solutions commonly encountered in chemical engineering practices. Includes sections on pure component properties, VLE, and equilibrium data. Data are unattributed and of unknown provenance.
MatWeb's database includes manufacturer-supplied property data on about 24,000 materials, including thermoplastic and thermoset polymers, metals, steel, superalloys, titanium and zinc alloys, ceramics, semiconductors, fibers, and other engineering materials. Searchable by material type, trade name, property parameters, manufacturer, etc.
A self-consistent set of values of the basic constants and conversion factors of physics and chemistry recommended by the Committee on Data for Science and Technology (CODATA) for international use. Further, it describes in detail the adjustment of the values of the subset of constants on which the complete set of recommended values is based.
Covers interactions for aqueous systems of organic and inorganic ligands with protons and various metal ions. It is an expanded and corrected update of Critical Stability Constants (Martell and Smith, Plenum Press, 1974-89). Includes 22,898 protonation constants under specified conditions of temperature and ionic strength for over 4,700 ligands, along with 3429 heats of protonation and 3016 entropies of protonation. The legacy NIST 46 Version 8.0 software (2004) is available free on the NIST site as an .exe file, as well as a user guide. It runs only on 32-bit Windows XP and earlier, requiring an emulator. Unfortunately, NIST no longer supports or updates this valuable database.
"ILThermo is a web-based ionic liquids database available free to the public. It aims to provide users worldwide with up-to-date information on publications of experimental investigation on ionic liquids, including numerical values of chemical and physical properties, measurement methods, sample purity, uncertainty of property values, as well as many other significant measurement details. The database can be searched by means of the ions constituting the ionic liquids, the ionic liquids themselves, their properties, and references." (SRD 147)
This database "includes essentially all reported kinetics results for thermal gas-phase chemical reactions. The database is designed to be searched for kinetics data based on the specific reactants involved, for reactions resulting in specified products, for all the reactions of a particular species, or for various combinations of these. In addition, the bibliography can be searched by author name or combination of names. The database contains in excess of 38,000 separate reaction records for over 11,700 distinct reactant pairs. These data have been abstracted from over 12,000 papers with literature coverage through early 2000." (SRD 17)
The JANAF (Joint Army-Navy-Air Force) Tables tabulate temperature-dependent thermochemical properties for over 47 elements and their associated compounds. The 1800+ tables cover the crystal, liquid, or ideal gas states for single and multi-phases of many inorganic substances and organic substances with one or two carbon atoms. (The searchable database is the 3rd edition and carries a date of 1985. The 4th edition is available as PDF files. Text searching is case sensitive!) Also available in print.
This site compiles and organizes many kinds of critically evaluated and up-to-date physical data, with searchable bibliographic sources. Physical constants, atomic and molecular spectroscopic data, ionization data, x-ray and gamma-ray data, nuclear physics data, and condensed matter data, etc. There is also an index to these databases based on chemical element.
Contains data on rate constants for solution-phase chemical reactions. The database is designed to be searched by reactants, products, solvents, or any combination of these. Coverage of the literature is through early 1995. The database contains more than 11,500 unique chemical species most of which have chemical formulas and CAS numbers. A database of more than 32,000 chemical names gives primary and alternate names for the compounds in the database.
ThermoML files represent experimental thermophysical and thermochemical property data reported in the corresponding articles published by several major journals in the field. These files are posted on this server through cooperation between the Thermodynamics Research Center (NIST-TRC) and the journal publishers.
A collection of more than 23,000 critically-evaluated phase diagrams in support of ceramics research. The database is a joint project of the American Ceramic Society and NIST and provides phase diagrams for oxides, salts, carbides, nitrides, brides, compound semiconductors, and chalcogenides.
Updated quarterly. A collection of more than 23,000 critically-evaluated phase diagrams in support of ceramics research. The database is a joint project of the American Ceramic Society and the National Institute of Standards and Technology and provides phase diagrams for oxides, salts, carbides, nitrides, brides, compound semiconductors, and chalcogenides.
After following the link above, click on “Click Here Without Signing In To Access Phase Diagrams” to access the UT subscription.
A suite of free resources that includes a Materials Database with over 1000 searchable materials, with corresponding thermal conductivity, thermal diffusivity, thermal effusivity, specific heat and density information; a literature database of papers on thermal conductivity; simulation software; and a properties calculator. (Thermtest)
A "computational knowledge engine" powered by Mathematica software and various numeric datasets. Some chemical and physical data can be found, although their accuracy and attribution are open to question.