Registration Dossier

Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

No Observed Effect Concentration (NOEC) for mortality, growth, reproduction and feeding activity of the earthworm Eisenia fetida was determined to be >= 1000 mg test item/kg soil, i.e. the highest concentration tested.

Key value for chemical safety assessment

Additional information

The long-term effects of oil shale thermal processing residue to terrestrial organisms was evaluated in a long-term test (21 d) with earthworm (Eisenia fetida) according to the OECD 222 and GLP. All study validity criteria were met and no mortality was observed in any treatment group. The body weight changes of the earthworms after 4 weeks exposure to oil shale thermal processing residue (CAS 93685-99-5) were not statistically significantly different compared to the control up to and including the highest test concentration of 1000 mg test item/kg soil (Williams t-test, α = 0.05, two-sided).

The reproduction rates were not statistically significantly different compared to the control up to and including the highest test concentration of 1000 mg test item/kg soil (Williams t-test, α = 0.05, one-sided smaller). No behavioural abnormalities were observed in any of the treatment groups. The feeding activity in all the treated groups was comparable to the control:

No Observed Effect Concentration (NOEC) for mortality, growth, reproduction and feeding activity of the earthworm Eisenia fetida was determined to be >= 1000 mg test item/kg soil, i.e. the highest concentration tested.