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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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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partition coefficient
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance reacts violently during the performance of the test

Description of key information

Study technically not feasible. Using KOWWIN v1.48 the log Pow of the test item was calculated to be 0.28.

Key value for chemical safety assessment

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

Additional information

In accordance to section 2 of REACH Annex XI, the test does not have to be performed when a substance reacts violently during the performance of the test. The substance reacts when in contact with glass and bonds to silanol groups. Therefore, no standardised test methods for determining the partition coefficient are suitable. Thus, the study is technically not feasible.

The logPow was calculated using KOWWIN v1.68 as part of EPISuite v4.11 from US Environmental Protection Agency.

Using KOWWIN v1.68 the log Kow of the test item was calculated to be 0.28 at 25 °C (EPI Suite, 2014).

Additionally, publications reporting the log Pow values of the constituents of the test item were used as supporting information.