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Home >  Classifications
Agents Classified by the IARC Monographs, Volumes 1–100

          Group 1Carcinogenic to humans107 agents
Group 2AProbably carcinogenic to humans  58
Group 2B        Possibly carcinogenic to humans249
Group 3Not classifiable as to its carcinogenicity to humans            512
Group 4Probably not carcinogenic to humans     1

For definitions of these groups, please see the Preamble.

It is strongly recommended to consult the complete Monographs on these agents, the publication date, and the list of studies considered.  Significant new information might support a different classification.
For agents that have not been classified, no determination of non-carcinogenicity or overall safety should be inferred.

List of classifications by alphabetical order

List of classifications by CAS® Registry Number order

List of classifications sorted by Group


Although care was taken in preparing these lists, mistakes may be present.
If you find an error, please notify us at imo@iarc.fr.

Last update: 30 Aug 2010


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