Registration Dossier
Registration Dossier
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EC number: 701-305-8 | CAS number: -
Bioaccumulation: terrestrial
Administrative data
Link to relevant study record(s)
Description of key information
Bioaccumulation is not applicable to the target compound itself but to single PAHs, i.e. benzo[a]pyrene (BaP).
Key value for chemical safety assessment
- BCF (terrestrial species):
- 16 000 L/kg ww
Additional information
The BCF in soil (= 16000) relates to benzo[a]pyrene. According to the Technical Guidance Document (EC 2003, part II), the bioconcentration in earthworm can be described as a hydrophobic partitioning between the pore-water and the phases inside the organism. This equilibrium partitioning approach can be modelled according to the following equation as described by Jager (1998):
BCFearthworm = (0.84 + 0.012Pow )/ROHearthworm
where for ROHearthworm by default a value of 1 (kgwwt/L) can be assumed.
EC (2003) Technical Guidance Document on Risk Assessment in support of Commission Directive 93/67/EEC, Commission Reg. (EC) No. 1488/94 and Directive 98/8/EC. European Commission, Joint Research Centre, European Chemicals Bureau.
According to EC 2003:
Jager T (1998) Mechanistic approach for estimating bioconcentration of organic chemicals in earthworms (Oligochaeta). Environ. Toxicol. Chem. 17, 2080-2090
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