Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Diss Factsheets

Ecotoxicological information

Toxicity to terrestrial arthropods

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Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

Additional information

There are no data describing the long-term toxicity of the registered substance to terrestrial arthropods. Terrestrial test data have been read-across from the analogue substance, phenyl silsesquioxanes (EC 939-487-8). An earthworm reproduction (OECD 222) and soil microorganism (OECD 216) test have been conducted with phenyl silsesquioxanes. The earthworm is the standard organism for soil macroorganisms and there is no indication that arthropods would be any more susceptible, therefore the data read-across from the earthworm reproduction test and soil microorganism tests with phenyl silsesquioxanes are considered to be suitable to derive hazard and risk assessment under REACH for octaphenylcyclotetrasiloxane and the requirement for further tests with terrestrial arthropods is waived.