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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

There are no experimental data available of cyclohexanethil for bioaccumulation in aquatic organisms. BCF was estimated using model BCFBAF - EPI Suite (US EPA, 2013a), which is a SAR-based method that uses Kow to estimate BCF .  Estimated  BCF was 47.5 L/kg wet-wt. The substance falls within the applicability domain and thereforethe predicted value can be considered as reliable taking into account the statistical information for the BCF estimation in training and validation datasets. 
The predicted value was used for completing of registration dossier for transported intermediate.

Key value for chemical safety assessment

BCF (aquatic species):
47.5 L/kg ww

Additional information

Currently there is no universally accepted definition of model domain.  However, users may wish to consider the possibility that bioconcentration factor estimates are less accurate for compounds outside the MW and logKow ranges of the training set compounds, and/or that have more instances of a given correction factor than the maximum for all training set compounds. Limits for applicability is

  • Molecular Weight (MW): minimum 68.08  and Maximum 991.80
  • Log Kow: Minimum -6.50 and Maximum 11.26

MW of cyclohexanethiol is 116.22 and estimated Log Kow is 3.05.

The substance falls within the applicability domain described above and therefore the predicted value can be considered as reliable taking into account thestatistical information for the BCF estimation in training and validation Datasets.

The estimated BCF value of 47.5 L/kg wet wt indicates low bioconcentration potential.