| Atomic Weights of the Elements |
| Chemical Nomenclature |
| Chemical Structure Databases |
| Articles | Classic Papers from the History of Chemistry |
| Dictionary | Chemical Entities of Biological Interest - Dictionary of ‘small’ chemical compounds |
| Dictionary | English-Hebrew Dictionary of Chemistry terms |
| Directory | Available Chemicals Directory |
| Directory | Chemical Search Engine |
| Directory | Chemistry Help and Problems |
| Directory | Computational Chemistry List |
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| Directory | Spectroscopic Databases |
| Forums | Chemical Forums |
| Glossary | Glossary of Stereochemical Terms |
| History | Alchemical and archaic chemistry terms |
| Humor | Chemistry Jokes |
| Infographics | Compound Interest - Explaining common chemical compounds with easy-to-understand graphics |
| Protocols | ChemSpider SyntheticPages - Database of synthetic organic, organometallic and inorganic chemical synthesis |
| Reactions | ChemSynthesis Chemical Synthesis Database |
| Reference | ATSDR Toxic Substances Portal |
| Reference | Atomic Weights of the Elements (From IUPAC) |
| Reference | BioMagResBank, NMR Spectroscopy on Proteins, Peptides and Nucleic Acids |
| Reference | CAS Registry - Authoritative source for accurate chemical names, structures, and registry numbers |
| Reference | CODATA Key Values for Thermodynamics |
| Reference | ChemExper Directory for Chemical suppliers |
| Reference | Chemical Compatibility Database |
| Reference | Chemical Kinetics Database on gas-phase reactions |
| Reference | Chemical Spectra and Spectral Data: Web Sources |
| Reference | Chemistry Data Tables |
| Reference | Crystalium An Exploration of the Surfaces and Wulff shapes of the Elements |
| Reference | Database of Ionic Radii |
| Reference | Global Portal to Information on Chemical Substances |
| Reference | IUPAC Nomenclature of Organic Chemistry |
| Reference | Korea Thermophysical Properties Database |
| Reference | Material Hub |
| Reference | Material information system for the plastics industry |
| Reference | NDRL/NIST Solution Kinetics Database on solution-phase reactions |
| Reference | NIOSH Pocket Guide to Chemical Hazards |
| Reference | NIST Chemistry WebBook |
| Reference | Organic chemistry portal |
| Reference | Sortable List of Periodic Table Elements |
| Reference | Technical Resource Library - including white papers and videos |
| Reference | Thermophysical Properties of Fluid Systems |
| Reference | WebElements Periodic Table |
| Reference | pKa Table |
| Spectra | EPA Emission Measurement Center Spectral Database |
| Spectra | NMRshiftdb2 - Database for organic structures and their nuclear magnetic resonance (nmr) spectra |
| Spectra | Spectral Database for Organic Compounds |
| Spectra | Wiley's Spectral Databases |
| Videos | States of Matter Videos |
