- DIPPR Project 801 (from Knovel)
"Knovelized 2005 update of DIPPR Project 801 (Full Version) Database." (Evaluated Standard Thermophysical Property Values.) "... physical, thermodynamic, and transport properties for industrially important chemicals used in chemical process and equipment design."
- CrossFire (Beilstein and Gmelin Handbooks online)
Chemical structures, reactions and properties, references to the literature for organic and inorganic compounds from the Beilstein and Gmelin databases. Structure searchable database of chemical substances with references dating back to the 18th century. Still one of the best places to obtain property data.
Instructions on accessing CrossFire and access to help guides
- NIST (National Institute of Standards and Technology, U.S.A) Chemistry WebBook
Access to data compiled and distributed by National Institute of Standards and Technology under the Standard Reference Data Program. Thermochemical data for over 7000 organic and small inorganic compounds, thermophysical properties for 74 fluids.
Displays liquid-vapor curves.
- Yaws' Handbook of Thermodynamic and Physical Properties of Chemical Compounds: Physical, Thermodynamic and Transport Properties for 5,000 Organic Chemical Compounds
Knovel e-book "describes how chemicals behave at different temperatures for 5000 organic chemical compounds covering C1 to C70 organics."
From FIZ-Berlin-the Chemistry Information Centre (Fachinformationszentrum Chemi, FIZ Chemie Berlin). Thermophysical properties of more than 199,000 pure compounds and 90,000 mixtures. Not all of the information is free, however, freely accessible information is marked.
- Facility for the analysis of chemical thermodynamics (F*A*C*T)
A joint project between Ecole Polytechnique de Montreal and McGill University for chemical metallurgy thermodynamic information. Mostly covers inorganic compounds. Click on "Fact-Web" on the left to access content.
- Thermochemistry DB for High-Temp Materials Synthesis
"Provides thermochemistry for gas-phase and condensed species relevant to a wide range of high-temperature processes, including chemical vapor deposition (CVD), chemical vapor infiltration (CVI), catalysis, combustion, materials corrosion, and aerosol processing. ... It includes thermodynamic data (heats of formation, enthalpies, entropies, and heat capacities) for gas and condensed-phase species, thermodynamic models for specific condensed-phase material systems that account for non-ideal behavior in those systems, and a wide range of calculated molecular properties for gas-phase species (vibrational frequencies, moments of inertia, etc.) Data for gas-phase species are obtained from ab initio electronic structure calculations using the Bond Additivity Correction method, while data and models for condensed-phase systems are obtained from the Associate Species Model. Data for gas-phase species are the results of calculations at a specific level of theory, not a critical review of the literature.
- Heats of hydrogenation: experimental and computational hydrogen thermochemistry of organic compounds(2006)
ebrary book with some experimental data and references to the literature
"... thermodynamic and associated information on lipid mesophase and crystal polymorphic transitions. ... 20,784 records in LIPIDAT.2 with entries up to the year 1997. The last major update was done in 1993." It is not currently being updated.