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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The BCF was calculated to be 2.75 L/kg (regression-based estimate) and 2.475 L/kg (Arnot-Gobas method), respectively. [with BCFBAF v3.01 (EPIWIN software by US-EPA)]

Key value for chemical safety assessment

BCF (aquatic species):
2.75 L/kg ww

Additional information

The prediction for the bioconcentration factor (BCF) of the substance triethyl citrate was done by the computer program BCFBAF v3.01 (EPIWIN software) by US-EPA. 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. It is possible to predict the apparent metabolism half-life in fish for three different trophic levels (lower, mid and upper). Using the regression-based estimate (traditional method) a BCF of 2.75 L/kg wet-wt was calculated. Using the Arnot-Gobas method, which is based on the mechanistic first principles, the BCF results in a value of 2.475 L/kg wet-wt. Both values have been calculated based on an experimental LogPow of 1.17 [low potential for bioaccumulation according to Regulation (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures (CLP), as value is < 4]. The whole body primary biotransformation rate estimate for fish gives a half-life of 0.000246 days, whereby the rate constant (kM) for 10 g fish is designated as 100/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 1.29 L/kg wet-wt is calculated, whereas for the mid trophic level the BCF will result in 1.277 L/kg wet-wt and the higher trophic level gives a value of 1.201 L/kg wet-wt. Based on the results, a low potential for bioconcentration is to be expected(according to CLP Regulation 1272/2008 substances with a BCF ≥ 500 have a potential for bioconcentration in aquatic organisms).