Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Dodecamethylcyclohexasiloxane (D6) hydrolyses to dimethylsilanediol with a hydrolysis half-life of greater than 48 hours. Therefore, the environmental hazard assessment is based on the properties of the parent substance in accordance with the REACH guidance for Chemical Safety Assessment (Chapter R.16; ECHA, 2012).

Dimethylsilanediol is the final product of hydrolysis reactions under the normal range of conditions of pH and temperature. However, other biotic or abiotic reactions may proceed over longer time-scales in the environment.