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Ecotoxicological information

Toxicity to terrestrial arthropods

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Description of key information

Waiver:  indirect and direct exposure to terrestrial organisms is unlikely.

Key value for chemical safety assessment

Additional information

Measured toxicity data are not available for terrestrial organisms for o-tert-butylphenol.

 

In Annex X of Regulation (EC) No 1907/2006, it is laid down that long-term toxicity to terrestrial organisms shall be proposed by the registrant if the chemical safety assessment indicates the need to investigate further the effects of the substance and/or relevant degradation products on terrestrial organisms. Column 2 of Annex X states that studies do not need to be conducted if direct and indirect exposure of the soil compartment is unlikely.

The test substance is not supposed to be applied directly to soil. Reliable biodegradation study results indicatethatthe substance is considered inherently biodegradable. Use of the substance does not include direct exposure to soil. It can be assumed that o-tert-butylphenol will be biodegraded within the STP process and as a consequence a transfer to the soil compartment via sewage sludge is not expected. Any release to wastewater treatment plant or soil from residual o-tert-butylphenol in resin is negligible. Therefore, no tests on terrestrial organisms are provided.