Chemical Databases
Find physical and chemical properties of compounds, molecules, and atoms. Abstracts, patents, and chemical incompatibilities all have databases.
2006 Chemistry Features
This is a collection of the chemistry features written for About Chemistry in 2006. Learn how mood rings work, how to make smoke bombs, make a sparkler, and grow your own crystal geode.
This is a collection of the chemistry features written for About Chemistry in 2006. Learn how mood rings work, how to make smoke bombs, make a sparkler, and grow your own crystal geode.
Chemical Names for Common Substances
Do you need to know the chemical name for aspirin or baking soda? This is the list for you! Look up the common name of a substance to see its chemical or scientific name.
Do you need to know the chemical name for aspirin or baking soda? This is the list for you! Look up the common name of a substance to see its chemical or scientific name.
Drugs from Plants
This is a table listing many of the pharmaceuticals that are derived from plants, including the names of the drugs, their actions, plant sources, and the common names of the plants.
This is a table listing many of the pharmaceuticals that are derived from plants, including the names of the drugs, their actions, plant sources, and the common names of the plants.
Electronic Configuration of the Elements
This table is a compilation of the electron configurations of the elements up through number 104. Tips for writing out stable configurations and for shorthand notation are included.
This table is a compilation of the electron configurations of the elements up through number 104. Tips for writing out stable configurations and for shorthand notation are included.
Element Photos
You probably know what elemental carbon looks like (think diamond or graphite), but you might not know what indium or cadmium look like. Here's a collection of photographs of the elements to help you out.
You probably know what elemental carbon looks like (think diamond or graphite), but you might not know what indium or cadmium look like. Here's a collection of photographs of the elements to help you out.
Science Laboratory Safety Signs
This is a collection of safety signs and symbols commonly seen in a science laboratory, particularly a chemistry lab.
This is a collection of safety signs and symbols commonly seen in a science laboratory, particularly a chemistry lab.
Valences of the Elements
The valences aren't just those you see in the columns of the periodic table! Check out this chart of element valences to help determine potential chemical reactions.
The valences aren't just those you see in the columns of the periodic table! Check out this chart of element valences to help determine potential chemical reactions.
2001 Atomic Weights
The IUPAC Commission on Atomic Weights and Isotopic Abundances 2001 list is provided here. It's interesting to see how abundances 'change' over time.
The IUPAC Commission on Atomic Weights and Isotopic Abundances 2001 list is provided here. It's interesting to see how abundances 'change' over time.
3D Structures Database
The National Cancer Institute offers 127,000 chemical structures, indexed according to CAS number. The free CHIME plug-in is needed for viewing. The site is sponsored by chem.com.
The National Cancer Institute offers 127,000 chemical structures, indexed according to CAS number. The free CHIME plug-in is needed for viewing. The site is sponsored by chem.com.
Acoustic Properties of Materials
Includes many solids, liquids, and gases. From Specialty Engineering Associates.
Includes many solids, liquids, and gases. From Specialty Engineering Associates.
AntiCancer Agent Mechanism Database
Proper browser plug-ins allow access to three-dimensional viewing. From the National Cancer Institute.
Proper browser plug-ins allow access to three-dimensional viewing. From the National Cancer Institute.
AssayFinder
Use this site to find an assay, register your site, register an assay, or amend an assay.
Use this site to find an assay, register your site, register an assay, or amend an assay.
Athena Mineralogy Database
This is a comprehensive searchable database with mineral formulas, systems, and pictures. Links, shareware, a bibliography, and abbreviations are also provided.
This is a comprehensive searchable database with mineral formulas, systems, and pictures. Links, shareware, a bibliography, and abbreviations are also provided.
Atomic Weights of the Elements
Web version of the International Union of Pure and Applied Chemistry data. From Queen Mary & Westfield College.
Web version of the International Union of Pure and Applied Chemistry data. From Queen Mary & Westfield College.
BioMagResBank
This is an internet repository for NMR spectroscopy data on proteins, peptides, and nucleic acids. Separate sections exist for biological macromolecules, NMR spectral parameters, kinetics, thermodynamics, and structure.
This is an internet repository for NMR spectroscopy data on proteins, peptides, and nucleic acids. Separate sections exist for biological macromolecules, NMR spectral parameters, kinetics, thermodynamics, and structure.
Biomolecular Modeling Laboratory
Software and databases allowing manipulations of protein/nucleic acid structures. From Imperial Cancer Research Fund.
Software and databases allowing manipulations of protein/nucleic acid structures. From Imperial Cancer Research Fund.
CATH Protein Structure Classification
Explore protein Class, Architecture, Topology and Homologous superfamily. From University College London.
Explore protein Class, Architecture, Topology and Homologous superfamily. From University College London.
CCIIM
Clearinghouse for Chemical Information Instructional Materials. Chemical patents, chemical name, and formula searching.
Clearinghouse for Chemical Information Instructional Materials. Chemical patents, chemical name, and formula searching.
Center for Molecular Modeling
Tutorials and databases of macromolecular structure and dynamics. From US National Institutes of Health.
Tutorials and databases of macromolecular structure and dynamics. From US National Institutes of Health.
Chemcompass
Chemcompass provides a database for the chemical industry of over 20,000 products, 2,000 companies, brands, EINECS or CAS numbers, company information, and other data. Registration is required. Viewable in English or German.
Chemcompass provides a database for the chemical industry of over 20,000 products, 2,000 companies, brands, EINECS or CAS numbers, company information, and other data. Registration is required. Viewable in English or German.
ChemExper
ChemExper offers a free service to locate a chemical by molecular formula, IUPAC name, common name, CAS number, catalog number, substructure, or physical characteristics. The database includes over 70,000 chemicals, 16,000 MSDS, 5,000 IR spectra, and 20 suppliers.
ChemExper offers a free service to locate a chemical by molecular formula, IUPAC name, common name, CAS number, catalog number, substructure, or physical characteristics. The database includes over 70,000 chemicals, 16,000 MSDS, 5,000 IR spectra, and 20 suppliers.
ChemFinder
Excellent search engine using name, formula, melting point, etc. to retrieve details. If you remove their cookie, you will get more than four requests.
Excellent search engine using name, formula, melting point, etc. to retrieve details. If you remove their cookie, you will get more than four requests.
Chemical Abstracts Service
World's largest chemical database repository. A division of the American Chemical Society. Requires paid subscription.
World's largest chemical database repository. A division of the American Chemical Society. Requires paid subscription.
Chemical Information Page
Extensive databases include general chemicals, drugs, and environmental hazards. Visualization of structures requires Chime plug-in. From Specialized Information Services, US National Library of Medicine.
Extensive databases include general chemicals, drugs, and environmental hazards. Visualization of structures requires Chime plug-in. From Specialized Information Services, US National Library of Medicine.
Chemical Resistance of Resin Materials
List includes nylon, polypropylene, and PVDF. From Eldon James, Corp.
List includes nylon, polypropylene, and PVDF. From Eldon James, Corp.
Chemicals with Pharmaceutical Activity
Requires chemical structure plug-ins for visualization. From University of Oxford.
Requires chemical structure plug-ins for visualization. From University of Oxford.
CHEMystery Reference Tables
Solubilities, reduction potentials, gas densities.
Solubilities, reduction potentials, gas densities.
Coffee and Caffeine FAQs
With additional information on theobromine and theophylline.
With additional information on theobromine and theophylline.
Crystran Ltd.
Physical, chemical, and optical properties of some materials used in ultraviolet and infrared instruments.
Physical, chemical, and optical properties of some materials used in ultraviolet and infrared instruments.
DAIN Metadatabase
A search engine for environmental chemical databases. From Kristina Voigt and Joachim Benz.
A search engine for environmental chemical databases. From Kristina Voigt and Joachim Benz.
Digital Spectral Library
Plots of reflectance spectra and descriptive data for minerals. From the US Geological Survey.
Plots of reflectance spectra and descriptive data for minerals. From the US Geological Survey.
Distillation, Vapor Pressure, and Equilibria
Tables and calculations involving vapor-liquid equilibria. From Shuzo Ohe, Science University of Japan.
Tables and calculations involving vapor-liquid equilibria. From Shuzo Ohe, Science University of Japan.
DTP Anti-cancer Agent Mechanism Database
The Anti-cancer Agent Mechanism Database is a set of 122 compounds with anti-cancer activity and reasonably well-known mechanisms. Chemical MIME is necessary for use.
The Anti-cancer Agent Mechanism Database is a set of 122 compounds with anti-cancer activity and reasonably well-known mechanisms. Chemical MIME is necessary for use.
Dudley Chemical Corporation
Lists of CAS numbers of dyes, stains, indicators, and some other reagents.
Lists of CAS numbers of dyes, stains, indicators, and some other reagents.
ECTOC Hyperglossary
Molecules and the papers to which they are linked. From the Electronic Conferences on Trends in Organic Chemistry.
Molecules and the papers to which they are linked. From the Electronic Conferences on Trends in Organic Chemistry.
Enzyme Structures Database
Collection of enzyme structure entries in the Brookhaven Protein Data Bank. From University College London.
Collection of enzyme structure entries in the Brookhaven Protein Data Bank. From University College London.
ExPASy Molecular Biology Server
Proteomics gateway to protein and enzyme databases, homology searches, and structural predictions. From the Swiss Institute of Bioinformatics.
Proteomics gateway to protein and enzyme databases, homology searches, and structural predictions. From the Swiss Institute of Bioinformatics.
Food Composition Data
Chemical information pertaining to foods: analytical techniques, nutritive values, sugar, vitamin, and trans fatty acid content, etc. From the US Department of Agriculture.
Chemical information pertaining to foods: analytical techniques, nutritive values, sugar, vitamin, and trans fatty acid content, etc. From the US Department of Agriculture.
HerbMed
Search for information on traditional and modern herbal preparations and publications relating to their medicinal uses. From the Alternative Medicine Foundation.
Search for information on traditional and modern herbal preparations and publications relating to their medicinal uses. From the Alternative Medicine Foundation.
Hetero Compound Information Center
Search for information about some small molecules present in the Protein Data Bank (PDB). From Gerard J. Kleywegt, Uppsala University.
Search for information about some small molecules present in the Protein Data Bank (PDB). From Gerard J. Kleywegt, Uppsala University.
Inorganic Crystal Structure Database
View VRML structures from Fachinformationszentrum Karlsruhe. Requires VRML plug-in.
View VRML structures from Fachinformationszentrum Karlsruhe. Requires VRML plug-in.
INSC Material Properties Database
Focuses on materials used in light water nuclear reactors. From the International Nuclear Safety Center.
Focuses on materials used in light water nuclear reactors. From the International Nuclear Safety Center.
Institute for Scientific Information
Publishers of Current Contents and the Web of Science. Requires paid subscription.
Publishers of Current Contents and the Web of Science. Requires paid subscription.
Kyoto Encyclopedia of Genes and Genomes
Search for biological compounds, enzymes, metabolic pathways, and chromosomes. From Kyoto University.
Search for biological compounds, enzymes, metabolic pathways, and chromosomes. From Kyoto University.
Lund Nuclear Data WWW Service
Data tables include information on atomic masses, half-life, isotopes, and radioactive decay products. From Lunds Universitet.
Data tables include information on atomic masses, half-life, isotopes, and radioactive decay products. From Lunds Universitet.
Material Properties
Specialty Engineering offers their list of material properties for several solids, piezoelectrics, plastics, rubbers, liquids, and gases.
Specialty Engineering offers their list of material properties for several solids, piezoelectrics, plastics, rubbers, liquids, and gases.
MatWeb
Search for mechanical, physical, and thermal properties from a wide array of materials.
Search for mechanical, physical, and thermal properties from a wide array of materials.
Metalloprotein Database and Browser
Evaluations of protein/metal interactions. From Jesus M. Castagnetto, Scripps Research Institute.
Evaluations of protein/metal interactions. From Jesus M. Castagnetto, Scripps Research Institute.
Mineral Gallery
Chemistry, characteristics, and identification of minerals. From Amethyst Galleries.
Chemistry, characteristics, and identification of minerals. From Amethyst Galleries.
Mineral Spectroscopy Server
Visible, infrared, and Raman spectra of minerals. From George R. Rossman, California Institute of Technology.
Visible, infrared, and Raman spectra of minerals. From George R. Rossman, California Institute of Technology.
Mineralogy Database
Classification schemes, chemical composition, crystallography. From David Barthelmy.
Classification schemes, chemical composition, crystallography. From David Barthelmy.
Molecules R US
Searches PDB (Protein Data Bank) and gives graphical output of desired protein. Ribbons-Image provides adequate output for most browsers. From the US National Institutes of Health.
Searches PDB (Protein Data Bank) and gives graphical output of desired protein. Ribbons-Image provides adequate output for most browsers. From the US National Institutes of Health.
MSDS-Search
Information concerning Material Safety Data Sheets including databases, manufacturers, and software.
Information concerning Material Safety Data Sheets including databases, manufacturers, and software.
NIST Atomic Spectra Databases
Display data by energy level or wavelength. From the National Institutes of Standards and Technology.
Display data by energy level or wavelength. From the National Institutes of Standards and Technology.
NIST Chemistry WebBook
A very complete standard reference database. Also see their Reference on Constants, Units, and Uncertainty.
A very complete standard reference database. Also see their Reference on Constants, Units, and Uncertainty.
NTP Study Databases
Search for information on known toxic substances or those under study. From the National Toxicology Program, US Department of Health and Human Services.
Search for information on known toxic substances or those under study. From the National Toxicology Program, US Department of Health and Human Services.
Optima X
Searchable database for chemometrics publications and information. From Rasmus Bro, The Royal Veterinary and Agricultural University, Denmark.
Searchable database for chemometrics publications and information. From Rasmus Bro, The Royal Veterinary and Agricultural University, Denmark.
Organic Compounds Database
Search on molecular weight, melting point, empirical formulas, etc.
Search on molecular weight, melting point, empirical formulas, etc.
Pherolist
Female moth pheromones that attract male moths.
Female moth pheromones that attract male moths.
Physical Reference Data
SI units, atomic weights, ground states, atomic spectra, nuclear physics data. From National Institute of Standards and Technology.
SI units, atomic weights, ground states, atomic spectra, nuclear physics data. From National Institute of Standards and Technology.
PRINTS - Protein Motif Fingerprint Database
Search for recurrent structural motifs in your protein of interest. From University College London.
Search for recurrent structural motifs in your protein of interest. From University College London.
Properties of Various Gases
Critical temperatures and pressures of hundreds of gases. From Flexware.
Critical temperatures and pressures of hundreds of gases. From Flexware.
PROWL
Protein mass spectrometry analysis site. Includes chemical properties of amino acids and peptides, and ability to search protein databases. From Rockefeller University.
Protein mass spectrometry analysis site. Includes chemical properties of amino acids and peptides, and ability to search protein databases. From Rockefeller University.
PSIGate - Physical Sciences Information Gateway
PSIGate is the physical sciences information gateway of the UK's Resource Discovery Network. The site provides access to internet science resources for astronomy, chemistry, earth sciences, physics, materials science, science history, and science policy.
PSIGate is the physical sciences information gateway of the UK's Resource Discovery Network. The site provides access to internet science resources for astronomy, chemistry, earth sciences, physics, materials science, science history, and science policy.
PubSCIENCE
Search and access peer-reviewed articles in the physical sciences. Some full text articles available. From the Office of Scientific and Technical Information, US Department of Energy.
Search and access peer-reviewed articles in the physical sciences. Some full text articles available. From the Office of Scientific and Technical Information, US Department of Energy.
Quick Guide to Manufactured Fibers
Trade names, generic names, properties, and uses. From the American Fiber Manufacturers Association.
Trade names, generic names, properties, and uses. From the American Fiber Manufacturers Association.
Radiation Chemistry Data Center
Data compilations of radicals, excited states, and other intermediates of radiation chemistry and photochemistry. From the University of Notre Dame.
Data compilations of radicals, excited states, and other intermediates of radiation chemistry and photochemistry. From the University of Notre Dame.
RCSB Protein Data Bank
Research Collaboratory for Structural Bioinformatics archives protein structure data generated from X-ray crystallography and nuclear magnetic resonance.
Research Collaboratory for Structural Bioinformatics archives protein structure data generated from X-ray crystallography and nuclear magnetic resonance.
Resources for Polymer Chemists
Tables include densities, refractive indices, and plasticizer compatabilities. From Scientific Polymer Products.
Tables include densities, refractive indices, and plasticizer compatabilities. From Scientific Polymer Products.
Scientific Instrument Services
Software for many makes and models of mass spectrometers. Includes wealth of mass spectroscopy information and references including resins used for packing columns, exact mass calculators, supplies, and equipment.
Software for many makes and models of mass spectrometers. Includes wealth of mass spectroscopy information and references including resins used for packing columns, exact mass calculators, supplies, and equipment.
SCOP - Structural Classification of Proteins
Discerning evolutionary relationships of protein by similarities in their structures. From Cambridge University.
Discerning evolutionary relationships of protein by similarities in their structures. From Cambridge University.
Scorecard
Search for profiles on mass-produced chemicals in the US, and receive a wealth of information concerning toxicity and regulations. From the Environmental Defense Fund.
Search for profiles on mass-produced chemicals in the US, and receive a wealth of information concerning toxicity and regulations. From the Environmental Defense Fund.
Sigma-Aldrich
Search their database for properties of available compounds.
Search their database for properties of available compounds.
Smell Database
Compounds, properties, structures, and their smells.
Compounds, properties, structures, and their smells.
SolvDB
Detailed solvent database from National Center for Manufacturing Sciences.
Detailed solvent database from National Center for Manufacturing Sciences.
Spectral Database System
Includes mass spectra, NMR, and IR spectra of organic compounds.
Includes mass spectra, NMR, and IR spectra of organic compounds.
Standard Reference Data Products
Collection of chemistry, biotechnology, and thermodynamics databases. From the National Institute of Standards and Technology.
Collection of chemistry, biotechnology, and thermodynamics databases. From the National Institute of Standards and Technology.
Thistothat
Glues recommended for bonding one surface to another.
Glues recommended for bonding one surface to another.
USGS Minerals Information
Keyword search finds data on domestic and foreign mineral production and consumption. From the US Geological Survey.
Keyword search finds data on domestic and foreign mineral production and consumption. From the US Geological Survey.
USPTO Patent Databases
From US Patent and Trademark Office. Patent information from 1976 to present is available.
From US Patent and Trademark Office. Patent information from 1976 to present is available.
Webbook of Organic Chemistry
Java images of molecular structures. From Ilkka Roininen.
Java images of molecular structures. From Ilkka Roininen.
X-Ray Interactions with Matter
Includes atomic scattering factors, index of refraction, and X-ray properties of the elements. From Eric Gullikson, Lawrence Berkeley National Laboratory.
Includes atomic scattering factors, index of refraction, and X-ray properties of the elements. From Eric Gullikson, Lawrence Berkeley National Laboratory.