| Title | Summary | |
| NIMS Material Database, Japan(Free) | SummaryPage |
| NIST Chemistry WebBook(Free) | SummaryPage |
| WebElements (The Periodic Table on the WWW) | SummaryPage |
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| Chemical & Physical Property Information Resources | SummaryPage |
| Database of Published Interatomic Parameters(Free) | SummaryPage |
| Databases and Software in Inorganic Chemical Thermodynamics (FACT site) | SummaryPage |
| DataGuide Online: Thermochemical data catalog program(Free) | SummaryPage |
| FACTrio (Kelvin, Dalton, Angstrom), JST(Free) | SummaryPage |
| Finding Physical and Chemical Properties | SummaryPage |
| Index to Physical, Chemical and Other Property Data | SummaryPage |
| IUPAC-NIST Solubility Database(Free) | SummaryPage |
| Knovel K-Essentials, 9 Free Interactive Engineering and Science References | SummaryPage |
| Landolt-Bornstein Handbooks (LB), Gateway of CAS | SummaryPage |
| LiqCryst Online(Partly Free) | SummaryPage |
| NIST Data Gateway(Free) | SummaryPage |
| On-Line Interactive Demo Version of PHYSPROP(Free) | SummaryPage |
| PoLyInfo (a wide variety of data required in polymeric material design)(Free) | SummaryPage |
| SOLV-DB: a wide variety of data on solvents(Free) | SummaryPage |
|
| CAMPUS (Computer Aided Material Preselection by Uniform Standards，free distribution) | SummaryPage |
| CATH Protein Structure Classification(Free) | SummaryPage |
| Chemical and Other Safety Information, Oxford University | SummaryPage |
| CINDAS databases (TPMD + MPMD) | SummaryPage |
| Classical, Quantum, Nanoscale & Statistical Thermodynamics & Mechanics Data, Property and Education | SummaryPage |
| CODATA Key Values for Thermodynamics(Free) | SummaryPage |
| F*A*C*T/FACT (Facility for the Analysis of Chemical Thermodynamics, FactSage) | SummaryPage |
| Goodfellow | SummaryPage |
| Knovel interactive engineering and scientific handbooks and databases(Partly Free) | SummaryPage |
| Materials Properties Locator Database | SummaryPage |
| Modular CHEM Consortium, Department of Chemistry, U.C. Berkeley, USA(Free) | SummaryPage |
| Perry's Chemical Engineers' Handbook (7th Edition) | SummaryPage |
| Properties of Organic Compounds on CD ROM, Version 5.0 | SummaryPage |
| Research databases of Jinno Laboratory, Toyohashi University of Technology(Free) | SummaryPage |
| Searching Chapman & Hall/CRC Properties of Organic Compounds from ChemWeb.com | SummaryPage |
| The Phase Diagram Web, The Georgia Institute of Technology(Free) | SummaryPage |
| ThermoDex: An Index of Selected Thermodynamic Data Handbooks | SummaryPage |
|
| 3-D Virtual Chemistry Library | SummaryPage |
| ACD pKa, LogP, LogD, Solubility | SummaryPage |
| ACD/I-Lab | SummaryPage |
| Advanced Petroleum-Based Fuels' Fuel Property Database(Office of Transportation Technologies, U.S. Department of Energy) | SummaryPage |
| AntiBase | SummaryPage |
| AQUASOL dATAbASE of Aqueous Solubility | SummaryPage |
| Atomic Line List(Free) | SummaryPage |
| Binding Database (data on noncovalent association, vital for the elucidation of the physical chemistry of molecular recognition and the discovery of new drugs) | SummaryPage |
| Bordwell pKa Table (Acidity in DMSO)(Free) | SummaryPage |
| Cambridge Cluster Database | SummaryPage |
| Chapman & Hall/CRC Dictionary of Commonly Cited Compounds | SummaryPage |
| ChemFinder(Free) | SummaryPage |
| Chemical Database Service (CDS), UK | SummaryPage |
| Chemical Elements.com(Free) | SummaryPage |
| Chemical Kinetics and Photochemical Data for Stratospheric Modeling(Free) | SummaryPage |
| Chemical Kinetics and Thermochemistry Database for High-Temperature Materials Synthesis(Free) | SummaryPage |
| Chemical Properties Handbook | SummaryPage |
| Chemistry Databases, Changchun Institute of Applied Chemistry(Free) | SummaryPage |
| ChemSage | SummaryPage |
| COMe-the bioinorganic motif database(Free) | SummaryPage |
| Common Molecules Collection (including over 2000 samples of molecules, elements and ions 3D stucture image) | SummaryPage |
| Compilations of Chemical Property Data (emphasizing the collection and review of reaction rate data for transient radicals, radical ions and excited states in solution)(Free) | SummaryPage |
| CRC Handbook of Chemistry and Physics (Web version) | SummaryPage |
| Data in total in Beilstein | SummaryPage |
| Database on Pesticides and the Environment(Free) | SummaryPage |
| Decay data search(Free) | SummaryPage |
| DETHERM | SummaryPage |
| DIPPR (Design Institute for Physical Property Data) | SummaryPage |
| DOCK (developed by the Kuntz group, Department of Pharmaceutical Chemistry, University of California(Free) | SummaryPage |
| Electron Binding Energies(Free) | SummaryPage |
| Electron Interactions with Plasma Processing Gases(Free) | SummaryPage |
| Electronic Encyclopedia of Reagents for Organic Synthesis (e-EROS) | SummaryPage |
| Elemental Data Index(Free) | SummaryPage |
| ELYS :- Electrolyte Solutions Database | SummaryPage |
| Engineering material properties(Free) | SummaryPage |
| EPI Suite(Free) | SummaryPage |
| EQS4WIN | SummaryPage |
| European Register of Marine Species (ERMS) | SummaryPage |
| Experimental Data on Mixtures, DIPPR - Project 805 | SummaryPage |
| EXTOXNET: Pesticide Information Profiles(Free) | SummaryPage |
| Firmenich | SummaryPage |
| Fluoride Action Network Pesticide Project(Free) | SummaryPage |
| FYDAT (Physical Property Database) | SummaryPage |
| Handbook of Ternary Alloy Phase Diagrams (10 Volume Set) | SummaryPage |
| Henry's Law Constants (Solubilities)(Free) | SummaryPage |
| Infotherm(Partly Free) | SummaryPage |
| Inorganic Chemistry Teaching Resources, Department of Chemistry, Washington State University, USA | SummaryPage |
| Interactive Analysis LogP and LogW Predictors(Free) | SummaryPage |
| Interactive LogKow (KowWin) LogP Demo(Free) | SummaryPage |
| International Chemical Safety Cards (ICSCs)(Free) | SummaryPage |
| International Data Series, Selected Data on Mixtures, Series A | SummaryPage |
| Ionization Energies, Electron Affinities and Electronegativies of the Elements | SummaryPage |
| Ionization Potentials / Electron Affinities(Free) | SummaryPage |
| IUPAC Stability Constants Database (SC-Database) | SummaryPage |
| IVC-SEP Data Bank for Electrolyte Solutions | SummaryPage |
| Joint Expert Speciation Syetem (JESS)(Free) | SummaryPage |
| Key to Metals | SummaryPage |
| Klotho: Biochemical Compounds Declarative Database(Free) | SummaryPage |
| Landolt-Bornstein Substance / Property Index(Free) | SummaryPage |
| LIPIDAT | SummaryPage |
| LIPIDBANK for Web(Free) | SummaryPage |
| Marinlit | SummaryPage |
| Metal Alloy Properties Database (offered by Principal Metals, Inc.)(Free) | SummaryPage |
| Mg Databases (magnesium mechanical and physical databases)(Free) | SummaryPage |
| Molar Thermodynamic Properties of Aqueous Solutes(Free) | SummaryPage |
| Molar Thermodynamic Properties of Pure Substances | SummaryPage |
| Molecular Knowledge Systems, Inc. | SummaryPage |
| MTDATA | SummaryPage |
| National Pesticide Information Retrieval System (NPIRS) | SummaryPage |
| NIST Computational Chemistry Comparison and Benchmark Database (CCCBDB)(Free) | SummaryPage |
| NIST Standard Reference Database 81: Heat Transmission Properties of Insulating and Building Materials(Free) | SummaryPage |
| Norgwyn Montgomery Software (molecular modeling and chemical database software) | SummaryPage |
| Oil Properties Database(Free) | SummaryPage |
| Organic Compounds Database, Virginia Tech | SummaryPage |
| Os-isotope database(Free) | SummaryPage |
| Pesticide Active Ingredient Information at Cornell University(Free) | SummaryPage |
| Pesticide Fact File (PFF) | SummaryPage |
| Pesticide Properties Database (PPD)(Free) | SummaryPage |
| Physical and Chemical Property Data Sources - Indiana University | SummaryPage |
| Physical Properties Database (PHYSPROP) | SummaryPage |
| Physical Properties of Carbon Nanotubes by Thomas A. Adams II | SummaryPage |
| pKa Data (Harvard University)(Free) | SummaryPage |
| pKa Data Compiled by David Ripin and David Evans for Chem 115 at Harvard University | SummaryPage |
| PLASPEC | SummaryPage |
| Polymers - A Property Database | SummaryPage |
| Polymers - A Property Database | SummaryPage |
| PPP Handbook: An Electronic Handbook for Polymer Properties | SummaryPage |
| Properties of popular NMR solvents | SummaryPage |
| Properties of Various Gases | SummaryPage |
| Rare Earth Elements On The Net | SummaryPage |
| Reference Guide Index for Ceramic Materials(Free) | SummaryPage |
| Senior Chemistry Data Tables | SummaryPage |
| Solid and Liquid Heat Capacity Data Collection, C1 - C33 Compounds | SummaryPage |
| Solubility Parameters on the Internet | SummaryPage |
| Solubility Resources, Caltech | SummaryPage |
| Sovent Selection DB(Free) | SummaryPage |
| Spectra Heap (Software and database of spectral lines for emission analysis) | SummaryPage |
| Spectrum Laboratories Inc | SummaryPage |
| Stability Constants Databases - NIST and IUPAC | SummaryPage |
| Standard Reference Data Products, NIST | SummaryPage |
| Supercritical Solubility Database(Free) | SummaryPage |
| Tables Relocated or Removed from CRC Handbook of Chemistry and Physics, 71st - 79th Editions | SummaryPage |
| Temperatures of Some Physical Phenomena | SummaryPage |
| The Rock Magnetic Bestiary(Free) | SummaryPage |
| Thermo Explorer | SummaryPage |
| Thermo-Calc Software | SummaryPage |
| Thermochemical Data of Elements and Compounds | SummaryPage |
| TRC data books | SummaryPage |
| TRC Thermodynamic Tables - Hydrocarbons | SummaryPage |
| TRC Thermodynamic Tables - Non-Hydrocarbons | SummaryPage |
| Vapor Pressure Data(Free) | SummaryPage |
|
| Chapman & Hall/CRC Combined Chemical Dictionary from ChemWeb.com(Partly Free) | SummaryPage |
| Landolt-Bornstein Online | SummaryPage |
|
| Four knovel Chemical References Free to Academe(01-24-2003) | SummaryPage |
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