Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Bioaccumulation: aquatic / sediment

No experimental data is available. Thus, the Bioconcentration factor (BCF) of the test substance is determined by the computer program BCFBAFWIN v3.00 (EPIWIN software) by US-EPA (Chemservice S.A., 2011). Furthermore the whole body primary biotransformation rate estimation for fish was calculated with the notation that the bio half-life normalized to 10 g fish at 15 °C. The apparent metabolism half-life in fish is predicted for three different trophic levels (lower, mid and upper). Using the regression-based estimate (traditional method) a BCF of 3.16 L/kg wet-wt was calculated. Using the Arnot-Gobas method, which is based on mechanistic first principles, the BCF results in a value of 0.90 L/kg wet-wt. The whole body primary biotransformation rate estimate for fish gives a half-life of 0.12 days, whereby the rate constant (kM) for 10 g fish amounts to 5.79/day. This is taken into account to predict the apparent metabolism half-life in fish for the substance. For the lower trophic level a BCF of 0.95 L/kg wet-wt is calculated, whereas for the mid trophic level the BCF will result in 0.94 L/kg wet-wt and the higher trophic level gives a value of 0.90 L/kg wet-wt. This procedure is regarded as a scientifically accepted calculation method and can be considered as reliable with restrictions (Klimisch 2). Furthermore, it can be taken into account for the chemical safety assessment.

Bioaccumulation: terrestrial

This information is not available and / or not required under REACH.