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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

PBT assessment

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Administrative data

PBT assessment: overall result

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Name:
di-tert-butyl peroxide
Type of composition:
boundary composition of the substance
State / form:
liquid
Reference substance:
di-tert-butyl peroxide
Name:
di-tert-butyl peroxide / 2,2'-dioxybis(2-methylpropane) / Peroxide, bis(1,1-dimethylethyl) / 110-05-4
Type of composition:
legal entity composition of the substance
State / form:
liquid
Reference substance:
di-tert-butyl peroxide / 2,2'-dioxybis(2-methylpropane) / Peroxide, bis(1,1-dimethylethyl) / 110-05-4
PBT status:
the substance is not PBT / vPvB
Justification:

The substance is assumed not to undergo biotic and abiotic degradation in the environment and thus is presumably P. Based on measured partition coefficient and estimated BCF, the substance is not considered as B. According to the results of two chronic Daphnia and algae studies, potential acute-to-chronic ratio for this substance and further toxicological data on mammals, the substance is likely to be not T.

Finally, the substance is assessed not to be PBT according to criteria of annex XIII of REACH.