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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

Additional information

Dimethoxydimethylsilane (CAS No. 1112-39-6) hydrolyses rapidly to dimethylsilanediol and methanol under environmental conditions (DT50 < 0.6 h at pH 7, pH 9 and 25 °C). Thus, the hydrolysis products rather than the parent substance are expected to be present in the environment after environmental release.

Direct photolysis is unlikely to be relevant for both hydrolysis products as they contain no chromophores that would absorb visible or UV radiation.