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EC number: 201-070-7
CAS number: 77-93-0
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)]
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
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