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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Partition coefficient

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Administrative data

Link to relevant study record(s)

Description of key information

In accordance with Column 2 of Annex VII Section 7.8 and Section 2 of Annex XI of the REACH regulation the test was not performed because the substance decomposes rapidly in aqueous solution (hydrolytically unstable).

Key value for chemical safety assessment

Log Kow (Log Pow):
at the temperature of:
25 °C

Additional information

Due to the behaviour of the substance in water and aqueous solution (rapid hydrolysis), the test could not be performed. Alternatively, the log Kow of MMDS and its hydrolysis products MDSA and formaldehyde were calculated using EPI Suite (KOWWIN Program (v1.68)):

Calculation of the log Kow of MMDS: estimated value of -0.85

Calculation of the log Kow of MDSA: estimated value of -1.485

Calculation of the log Kow of formaldehyde: estimated value of 0.35

For chemical safety assessment purposes the log Kow value of MDSA (i.e. -1.485) will be considered as key value.