Material Safety Data Sheet Matrix

ChemFinder -- is a name, formula, MW, CAS, and substructure searchable chemical database. The ChemFinder WebServer indexes over 150 chemical information sites. University of Kentucky/Interactive Learning Paradigms, Inc. has a huge list of links to MSDS sources on the internet. Oxford University -- is a nice site which includes a glossary, MSDS data on general chemicals, plus special sections for gases, carcinogens, and peroxides. Vermont SIRI -- Once connected, you will be given instructions on how to search the MSDS archive. This site also has links to other MSDS sites.
MSDSOnline.Com allows you to search by chemical name and company name. Free registration required; for a fee, you can have access to lots of other options. MSDS Search is an attempt to produce "one stop shopping" for all your MSDS needs. The site has lots of links to MSDS databases and in the future promises to have a "master" database of MSDS information. MSDSsolutions has a large database. Free registration is required for access. MSDS Provider is a place to search for Manufacturer specific MSDS sources.
International Chemical Safety Cards. University System of Georgia -- has a limited collection of MSDSs, but they have some unusual stuff in their collection. Pesticide Profiles at Oregon State University. University of Akron has a searchable hazardous material database.
ChemExper is a searchable MSDS database in Belgium. Howard Hughes Medical Institute has a list of MSDS like information for several chemicals. Agency for Toxic substances and Disease Registry has hazardous substance fact sheets. EPA Chemical Fact Sheets.
US Army/Edgewood Research has a small military unique MSDS database. VWR Scientific has online MSDS in their catalog. Electronic Space Products International has their MSDS data online in Adobe Acrobat format. Instant Chemical Hazards and Safety Datahas safety information on a small number of chemicals plus links to other sites.
Hooper Welding Supply has an on-line MSDS database for welding gases. Hazweb has lots of hazmat information plus an MSDS search area. It's free, but you must be a registered user. Reade Advanced Materials has a list of links to MSDS sites plus other safety related information. Seton, a safety products company, has an extensive library of not only MSDS data, but also workplace safety and environmental regulation information.
Emedco has a MSDS comprehensive library. Fisher Scientific has an online catalogue which includes MSDS information. Sigma-Aldrich has an online MSDS search area. Ecogopher EPA Fact Sheets -- These are documents which contain similar information to an MSDS. Once connected you will get a list of chemicals. Choose the chemical which you are interested in to get the fact sheet or give you a link to additional information.
MSDS Xchange can be searched by manufacturer or chemical, and has extensive health and safety links.