| Title | Summary | |
| 3RT.cn | SummaryPage |
| ISIHighlyCited.com: an expert gateway to the most highly influential scientists and scholars worldwide(Free) | SummaryPage |
| IUPAC Recommendation on Nomenclature and Symbolism of Biochemistry and Molecular Biology(Free) | SummaryPage |
| PEP Report Abstracts of SRI Consulting's Process Economics Program(Free) | SummaryPage |
| Theses Link Collection | SummaryPage |
| WebElements (The Periodic Table on the WWW) | SummaryPage |
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| Analytical Periodic Table | SummaryPage |
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| Caltech ETD database(Free) | SummaryPage |
| ChemDB Portal, a chemistry search engine for Deep Web | SummaryPage |
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| Database of Published Interatomic Parameters(Free) | SummaryPage |
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| Index to Physical, Chemical and Other Property Data | SummaryPage |
| Industry Accounts Data, GDP by industry, BEA, USA(Free) | SummaryPage |
| ISI's 1000 Most Cited Chemists, 1981 - June 1997 | SummaryPage |
| IUPAC Nomenclature of Organic Chemistry(Free) | SummaryPage |
| IUPAC Recommendations on Organic & Biochemical Nomenclature, Symbols & Terminology | SummaryPage |
| Laboratory on a Chip Network (LOCN) | SummaryPage |
| Martindale's Calculators On-Line Center: Chemistry | SummaryPage |
| MolData: Links to Data Sources in Chemistry | SummaryPage |
| NSFC Project Databank | SummaryPage |
| NTIS (1990 -)(Free) | SummaryPage |
| OSTI (Office of Scientific and Technical Information)(Free) | SummaryPage |
| Periodic Table of the Elements, C&EN's 80th anniversary(Free) | SummaryPage |
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| StatLib, archive of statistical datasets and software at Carnegie Mellon University | SummaryPage |
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| Substance Registry System (SRS), formerly Chemical Registry System (CRS), EPA | SummaryPage |
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| Techstreet | SummaryPage |
| World Wide Molecular Matrix | SummaryPage |
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| Chemical Name Synonyms Finder, ChemIndustry.com(Free) | SummaryPage |
| Chinese Subject Thesaurus online(Free) | SummaryPage |
| CODATA Key Values for Thermodynamics(Free) | SummaryPage |
| Cross Site Index of all U.S. ED-funded web sites | SummaryPage |
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| Materials Properties Locator Database | SummaryPage |
| Meta Search of chemical databases: ChemSpy.com | SummaryPage |
| Mineralogy Database | SummaryPage |
| Nobel Prize in Chemistry Winners, 1901 - | SummaryPage |
| Pictorial Periodic Table | SummaryPage |
| Scientific Database | SummaryPage |
| Search CFR online (the Code of Federal Regulations), US(Free) | SummaryPage |
| Searching Negwer - organic-chemical drugs and their synonyms from ChemWeb.com | SummaryPage |
| SureChem Free(Partly Free) | SummaryPage |
| The Molecule of the Month | SummaryPage |
| The Visual Elements Periodic Table | SummaryPage |
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| A Glossary of CAMD MSDS Management at Louisiana State University in Baton Rouge | SummaryPage |
| Abbreviations of Chemical Compounds - Searchable Index(Free) | SummaryPage |
| About SCI (Science Citation Index) | SummaryPage |
| AccessScience, McGraw-Hill Encyclopedia of Science & Technology | SummaryPage |
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| Acronym Server (complete lists of all scientific acronyms or abbreviations) | SummaryPage |
| Acronyms and Abbreviations of Chemical Compound Names(Free) | SummaryPage |
| Amino acid properties, U. C. Davis | SummaryPage |
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| Articles of nonferrous metals technology and application(Free) | SummaryPage |
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| Atomic Line List(Free) | SummaryPage |
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| CHEMBIOGRID: Chemistry Databases on the Web | SummaryPage |
| Chemical Acronyms and Abbreviations Database, Indiana University(Free) | SummaryPage |
| Chemical Compatibility Database, Cole-Parmer(Free) | SummaryPage |
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| Chemical Elements.com(Free) | SummaryPage |
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| China Catalogue for Microorganisms | SummaryPage |
| China Center of Industrial Culture Collection | SummaryPage |
| China Internet Network Information Center (CNNIC) | SummaryPage |
| China Popular Science Exhibition | SummaryPage |
| Classic Organic Reactions(Free) | SummaryPage |
| CODATA recommended values of the fundamental physical constants | SummaryPage |
| CogPrints: Cognitive Sciences E-Print Server(Free) | SummaryPage |
| COMAR, the international database for certified reference materials(Free) | SummaryPage |
| Common Compound Library(Free) | SummaryPage |
| Completed Assessments of Existing Substances, Canada | SummaryPage |
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| Data Book of Molecules | SummaryPage |
| Data for General, Inorganic, Organic, and Physical Chemistry(Free) | SummaryPage |
| Data in total in Beilstein | SummaryPage |
| Database of Intoxicated Gases due to Organic Solvents | SummaryPage |
| Database of Macromolecular Movements(Free) | SummaryPage |
| Dictionary of Chemical Names and Synonyms | SummaryPage |
| Dictionary.com(Free) | SummaryPage |
| Digital Library of Mathematical Functions | SummaryPage |
| Digital Library of MIT Theses | SummaryPage |
| EAFUS: A Food Additive Database(Free) | SummaryPage |
| ECDYBASE (The Ecdysone Handbook)(Free) | SummaryPage |
| Educational Research Abstracts (ERA) | SummaryPage |
| Electron Interactions with Plasma Processing Gases(Free) | SummaryPage |
| Electronic Educational Environment, University of California, Irvine(Free) | SummaryPage |
| Elemental Data Index(Free) | SummaryPage |
| ELINCS (European LIst of Notified Chemical Substances)(Free) | SummaryPage |
| Elsevier's electronic information solutions for chemists and chemical engineers | SummaryPage |
| Encyclopaedia of Occupational Health and Safety (New Fourth Edition) | SummaryPage |
| Encyclopedia of Life Sciences | SummaryPage |
| Encyclopedia of Separation Science | SummaryPage |
| END: Enzyme Nomenclature Database(Free) | SummaryPage |
| EPA/OPPT: Chemical Fact Sheets(Free) | SummaryPage |
| EPiC: Experiential Programs in Chemistry(Free) | SummaryPage |
| Eugene Garfield, Founder & Chairman Emeritus, Institute for Scientific Information | SummaryPage |
| EUROPAGES (European Business Directory)(Free) | SummaryPage |
| Federal R&D Project Summaries | SummaryPage |
| Federation for Internet-based Public Science Education (FIPSE) | SummaryPage |
| FORKAT | SummaryPage |
| General Chemistry Glossary(Free) | SummaryPage |
| Hazards Analysis of Sudan | SummaryPage |
| Henry's Law Constants (Solubilities)(Free) | SummaryPage |
| High Production Volume (HPV) Challenge Program, EPA, USA | SummaryPage |
| Historical Statistics for Mineral Commodities in the United States(Free) | SummaryPage |
| Hobbes' Internet Timeline | SummaryPage |
| Hobbes' Internet Timeline中文(GB)版 | SummaryPage |
| HotMolecBase (a database of information about 'hot molecules') | SummaryPage |
| Ignitable Liquids Reference Collection(Free) | SummaryPage |
| Images Collection of RSC | SummaryPage |
| Industry Accounts Data of Bureau of Economic Analysis, US | SummaryPage |
| Inorganic Molecular Database (Banque de molécules, France)(Free) | SummaryPage |
| IP.com disclosures database(Free) | SummaryPage |
| ISO Standards Search | SummaryPage |
| Japanese Cosmetic Color Index(Free) | SummaryPage |
| Key to Metals | SummaryPage |
| Laboratory Chemical Safety Summaries of the Howard Hughes Medical Institute (LCSSs)(Free) | SummaryPage |
| Literature Database - Zentralblatt MATH | SummaryPage |
| Marinlit | SummaryPage |
| Material Properties of Sugar(Free) | SummaryPage |
| Mindat.org(Free) | SummaryPage |
| Molecular Fragments at Okanagan University College (by Dr.Dave Woodcock) | SummaryPage |
| MOlecular GAsphase DOCumentation (MOGADOC) | SummaryPage |
| Molecular models at Okanagan University College (by Dr.Dave Woodcock)(Free) | SummaryPage |
| Molecule of the Month, University of Oxford(Free) | SummaryPage |
| Molecules of the Month, Imperial College London(Free) | SummaryPage |
| Molecules with Silly or Unusual Names, University of Bristol(Free) | SummaryPage |
| Named Organic Reactions Collection from the University of Oxford | SummaryPage |
| National Geochemical Database, US | SummaryPage |
| National Standards Systems Network (NSSN) | SummaryPage |
| New Crops database of the chemical composition(Free) | SummaryPage |
| NIST Computational Chemistry Comparison and Benchmark Database (CCCBDB)(Free) | SummaryPage |
| NLM Fact Sheets | SummaryPage |
| Nobel e-Museum: Chemistry(Free) | SummaryPage |
| Nobel Prize Internet Archive | SummaryPage |
| NOD - Dutch Research Database(Free) | SummaryPage |
| On-line Medical Dictionary | SummaryPage |
| Online chemical dictionary of Chemnet.com(Free) | SummaryPage |
| Online Dictionary - HyperDictionary.com(Free) | SummaryPage |
| Pesticide Use in California, PAN Pesticide Database(Free) | SummaryPage |
| photomicrograph database for microorganism collected by Buckman Laboratories | SummaryPage |
| Phthalocyanine Theses | SummaryPage |
| Physical Properties of Carbon Nanotubes by Thomas A. Adams II | SummaryPage |
| Physics and Astronomy Classification Scheme (PACS) | SummaryPage |
| Polycyclic Aromatic Hydrocarbon Structure Index, NIST(Free) | SummaryPage |
| Protocol Online - Your Lab's Reference Book | SummaryPage |
| Publist (database of 150,000 magazines, journals, newsletters, & other periodicals)(Free) | SummaryPage |
| Pump.net(Free) | SummaryPage |
| REACH (Registration, Evaluation and Authorisation of Chemicals) | SummaryPage |
| Reaction Index, Name Reactions in Organic Chemistry | SummaryPage |
| Research Disclosure | SummaryPage |
| Search the Demo of Cambridge Scientific Abstracts (1994 only) | SummaryPage |
| Searching ISO-ASTM Standards Equivalents for Plastics | SummaryPage |
| Senior Chemistry Data Tables | SummaryPage |
| SickList Database (database of problems which arise from using a particular ab initio computational method with a particular molecule)(Free) | SummaryPage |
| SMILECAS Database (acronym for Simplified Molecular Input Line Entry System) | SummaryPage |
| Standard Industrial Classification Code Descriptions | SummaryPage |
| Standard Industrial Classification Search, USA(Free) | SummaryPage |
| STAT-USA/Internet | SummaryPage |
| Table of Nuclides | SummaryPage |
| Technical Database Services, Inc (TDS) | SummaryPage |
| Temperatures of Some Physical Phenomena | SummaryPage |
| Terms of Environment | SummaryPage |
| The Chemical Reference Sources Database (CRSD), Indiana University(Free) | SummaryPage |
| The Constants and Equations Pages: Science(Free) | SummaryPage |
| The HR Manager: an on-line reference guide to Human Resources topics | SummaryPage |
| The List of "Indirect" Additives Used in Food Contact Substances(Free) | SummaryPage |
| The MIPS Comprehensive Yeast Genome Database (CYGD)(Free) | SummaryPage |
| The MSDS HyperGlossary at ILPI | SummaryPage |
| The National Science Foundation: visionlearning(Free) | SummaryPage |
| The Particle Adventure (Lawrence Berkeley National Laboratory)(Free) | SummaryPage |
| The Plastics Testing Encyclopedia | SummaryPage |
| Thomas Register of North America Manufacturers(Free) | SummaryPage |
| TRIS Online (Transportation Research Information Services)(Free) | SummaryPage |
| U.S. Geological Survey (USGS) | SummaryPage |
| UK Life Sciences Speakers Database（UKLSSD） | SummaryPage |
| UNIDO Industrial Statistics Database (INDSTAT3) | SummaryPage |
| United States Pharmacopeia (USP) | SummaryPage |
| VCF (Volatile Compounds in Food) | SummaryPage |
| X-ray Spectrum of Elements on the Periodic Table(Free) | SummaryPage |
| yourDictionary.com(Free) | SummaryPage |
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| Galactic Algorithms | SummaryPage |
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