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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 3,3,5-trimethylcyclohexylidene diperoxide
Type of composition:
boundary composition of the substance
State / form:
liquid
Reference substance:
Di-tert-butyl 3,3,5-trimethylcyclohexylidene diperoxide
Name:
1,1-di(tert-butylperoxy)-3,3,5-trimethylcyclohexane
Type of composition:
legal entity composition of the substance
State / form:
liquid
Reference substance:
1,1-di(tert-butylperoxy)-3,3,5-trimethylcyclohexane
PBT status:
further information relevant for the PBT assessment is necessary
Justification:

Meets P criteria (Sediment simulation study) and T criteria (sediment toxicity study). B is currently non conclusive due to contradicting and invalid data. A testing proposal has been made to rectify this.

This substance is the main source material in a proposed family of Peroxyketal organic peroxides with very similar / identical properties. The justification for this approach has been attached in secton 13. The intention being facilitate and harmonize the PBT / Ecotoxicity assessment of the other members of the group without uneccesary testing.