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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Description of key information

IARC Monograph Volume 71 discusses the studies summarized under this section. and concluded that,  "Lauroyl peroxide is not classifiable as to its carcinogenicity to humans (Group 3)."

Additional information

Early investigations summarized in this section evaluating the potential of initiation/promotion and tumor formation following skin painting and S.C. injection have been summarized by IARC in Monograph 71 as follows.

"Lauroyl peroxide was tested for carcinogenicity by subcutaneous administration in mice and rats and by skin application in mice. In one study in mice by subcutaneous administration, the evidence concerning a carcinogenic effect was inconclusive; in two other studies, no increase in tumour incidence was observed. Two studies in mice by skin application were inadequate for an evaluation of complete carcinogenicity; one study indicated that lauroyl peroxide has promoting activity in mouse skin (IARC, 1985)."