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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Administrative data

Link to relevant study record(s)

Description of key information

In accordance with column 2 of REACH Annex IX, the bioaccumulation in aquatic species study does not need to be conducted as the substance has a low potential for bioaccumulation (the substance has a log octanol water partition coefficient less than 3).
As no experimental data for bioaccumulation of 3,3,5-trimethylcyclohexanone in aquatic species is available, the BCF for fish is calculated using measured log Kow data (2.6 at 25 °C; see IUCLID section 4.7).
The BCF, calculated using the equation reported in the ECHA Guidance R., p. 17: (log BCF = 0.85 x log Kow – 0.70; R2 = 0.897, log Kow range = 1 – 5.5), is approximately 32.4.
The BCF of 32.4 is recommended for 3,3,5-trimethylcyclohexanone bioconcentration in this risk assessment.

Key value for chemical safety assessment

BCF (aquatic species):
32.4 dimensionless

Additional information