First, start with the Material Safety Data Sheet.  If one is not available, you may contact the manufacturer, importer, or supplier to request one.

Second, contact EHSS for assistance. There are several resources we may have easy access to, such as OSHA's "Toxic and Hazardous Substances" list, ACGIH's "Threshold Limit Values for Chemical Substances and Physical Agents in the Work Environment", NTP's "Annual Report on Carcinogens", IARC's "Monographs", or NIOSH's "Registry of Toxic Effects of Chemical Substances".