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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Description of key information

Key value for chemical safety assessment

Skin sensitisation

Endpoint conclusion
Endpoint conclusion:
no adverse effect observed (not sensitising)
Additional information:

The key study is the only test available for skin sensitisation of trimethoxy(2 -methylpropyl)silane.

Migrated from Short description of key information:
In a skin sensitisation study (Hüls Prüfinstitut für Toxikologie, 1993d) conducted according to OECD 406 and to GLP, Dynasylan IBTMO (isobutyltrimethoxysilan) was not sensitising to the skin of Dunkin-Hartley guinea-pigs. There were no systemic effects reported.

Justification for selection of skin sensitisation endpoint:
The selected study is the only skin sensitisation study available for the registered substance. It was conducted in accordance with an appropriate OECD test guideline and in compliance with GLP.

Justification for classification or non-classification

Trimethoxy(2-methylpropyl)silane is not classified as a skin sensitiser according to Regulation (EC) No 1272/2008.