Registration Dossier
Registration Dossier
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EC number: 239-898-6 | CAS number: 15793-73-4
Toxicity to soil microorganisms
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to soil microorganisms
- Data waiving:
- other justification
- Justification for data waiving:
- other:
- Endpoint:
- toxicity to soil microorganisms
- Data waiving:
- exposure considerations
- Justification for data waiving:
- the study does not need to be conducted because direct and indirect exposure of the soil compartment is unlikely
- Justification for type of information:
- The substance is not supposed to be directly applied to soil. Based on the PC properties of the substance (extremely low solubility in water and octanol), a low adsorption potential is indicated. Therefore, binding to sewage sludge is unlikely and as a consequence a transfer to the soil compartment is not expected. Therefore it can be assumed that there is no direct and indirect exposure to the environment.
There is no indication for any toxicity of the test substance, neither in tests on earthworms (Eisenia fetida) and sediment worms nor in tests on aquatic organisms of all trophic levels (acute and chronic). Additionally, due to the low water solubility of the test substance the test substance will not enter the pore water. Therefore, exposure of soil microorganism will not occur and they are not the relevant species concerning the terrestrial compartment. Furthermore, a test on the inhibition of the respiration rate according OECD 209 showed no effects on microorganisms. In conclusion, studies on soil microorganisms are not required and scientifically not justified.
Referenceopen allclose all
Description of key information
Direct and indirect exposure of the soil compartment is unlikely. In addition, there is no indication for any toxicity of the test substance, neither in tests on earthworms (Eisenia fetida) and sediment worms nor in tests on aquatic organisms of all trophic levels (acute and chronic). Furthermore, the outcome of the CSA indicates that the available terrestrial toxicity tests are appropriate to cover the information requirements. Therefore no further terrestric studies are necessary.
Key value for chemical safety assessment
Additional information
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