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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Bioaccumulation: aquatic/sediment: Low potential for bioaccumulation

Key value for chemical safety assessment

Additional information

Testing is waived as direct or indirect exposure of aquatic organisms to the registered substance is very limited due to the instability of the substance in water.

Tetramethyl orthosilicate hydrolyses rapidly (t1/2= < 1 h at pH7and 25°C)

to (poly)silicic acid and methanol. Methanol is expected to biodegrade fast.

(Poly)silicic acid is an inorganic substance which enters natural biogeochemical cycles for silicon (refer to Annex I of CSR).