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Ecotoxicological information

Toxicity to soil microorganisms

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Description of key information

waiver:  direct or indirect exposure to soil microorganisms is not expected.

Key value for chemical safety assessment

Additional information

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

 

In column 2 (9.4 Effects on terrestrial organisms) of Annex IX, REACH Regulation (EC) No 1907/2006, it is laid down 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 indicate that the 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.