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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

The substance reacts with water and rapidly hydrolyses to hydrogen chloride and octahydroxytrisilane. The read-across data have been presented as supporting evidence that the silanol hydrolysis product is not toxic.

No data are available for octachlorohydroxytrisilane. Reliable acute aquatic toxicity tests results for freshwater invertebrates and algae are however available from two read-across substances: trimethoxysilane (CAS 2487-90-3) and tetraethyl orthosilicate (CAS 78-10-4), justification for the use of these data is given in the overall ecotoxicological information endpoint summary.