For agents nominated to NTP for study, there is a requirement to have a health and safety plan in place to protect the workers conducting the studies. Between 1978 and 1991, a contractor assembled health and safety background information for chemicals selected for study by the program. These documents were provided to the laboratories to help them develop the individual health and safety plans before conducting any testing. It is this set of files that we provided on our website. Currently, the responsibility for assembling the appropriate health and safety information is that of the testing laboratory. The set of Health and Safety files on the NTP website was made available at a time when there was no other single comprehensive online source, especially for safety information. NTP does not plan to update these files and now there are several good and more current sources available.
National Institute for Occupational Safety and Health's "NIOSH Pocket Guide to Chemical Hazards"
NIOSH also provides links to other sources
National Library of Medicine's ChemIDplus offers access to several databases including the Hazardous Substance database