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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to soil microorganisms

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Administrative data

Link to relevant study record(s)

Description of key information

Waiver: 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.

Key value for chemical safety assessment

Additional information

Measured toxicity data are not available for terrestrial organisms for p-tert-amylphenol.

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 indicate that although the substance is not considered readily biodegradable, the test substance biodegrades rapidly once microbes have had a chance to acclimate. Study results indicate the test substance is inherently biodegradable. Use of the substance does not include direct exposure to sediment. All sludges related to the use of p-tert-amylphenol will be through industrial WWTP as the substance is used as an intermediate. It can be assumed that p-tert-amylphenol 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 p-tert-amylphenol in resin is negligible. Therefore, no tests on terrestrial organisms are provided.