A Material Safety Data Sheet (MSDS) is designed to provide the proper procedures for handling or working with substances. MSDS will include information such as physcial data (melting point, boiling point, flash point etc.), toxicity, health effects, first aid, reactivity, storage, disposal, protective equipment, and spill/leak procedures. These are of particular use if a spill or other accident occurs.
General resources: Where to find MSDS on the internet, Pointers to Material Safety Data Sheets on the internet, History of MSDS Selected (commercial) sites: MSDS solutions, MSDS search, Commercial MSDS Suppliers and Services