NIOSH RTECS Search System

G. NIOSH RTECS Search System. The National Institute for Occupational Safety and Health (NIOSH), created in 1970, is required by law to prepare a list containing all the toxic effects of chemicals that can be found to have been recorded (24). The Registry of Toxic Effects of Chemical Substances (RTECS) is the data base created and updated annually by NIOSH to fulfill the provisions of this law. In 1977 the data base consisted of some 25,000 chemicals and the toxicity associated with these chemicals. 

An example of a NIOSH RTECS search is shown in Figure 7. In this example, a search is being performed for all oral rodent LD50 toxicity data with values less than 75 ug./kg. of which the system indicates there are 3. The bottom of Figure 7 shows these three references, with the NIOSH number, toxicity data and the literature citation for that measurement. 

CAS = Chemical Abstracts Services DOT/UN/NA/IMCO = Department of Transportation/United Nations/North America/International Maritime Dangerous Goods Code EPA = Environmental Protection Agency HSDB = Hazardous Substances Data Bank NCI = National Cancer Institute NIOSH = National Institute for Occupational Safety and Health OHM/TADS = Oi1 and Hazardous Materials/Technical Assistance Data System RTECS = Registry of Toxic Effects of Chemicals Substances SANSS = Structure and Nomenclature Search System... 

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