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EC number: 904-153-2 | CAS number: -
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: simulation testing on ultimate degradation in surface water
- Data waiving:
- other justification
- Justification for data waiving:
- other:
- Endpoint:
- biodegradation in water: sediment simulation testing
- Data waiving:
- exposure considerations
- Justification for data waiving:
- the study does not need to be conducted because direct and indirect exposure of sediment is unlikely
- Transformation products:
- not measured
Referenceopen allclose all
Description of key information
Based on available data, exposure to the sediment compartment is not likely and it can be expected that all components of Polyol TD have a low potential for adsorption to sediment. Therefore, degradation simulation testing in sediment does not need to be conducted.
Simulation Biodegradation Test test design is the standard information requirement for substance registered for 100 tonnes or more per year. Since general adaptation possibilities of Annex XI as well as specific adaptation possibilities of Annexes VI to X (and column 2 thereof) of the REACH Regulation are not adequate to generate the necessary information, a simulation testing on ultimate degradation in surface water is planned according to ECHA's decision. Testing data will be included when data become available.
Key value for chemical safety assessment
Additional information
Exposure to the sediment compartment is not likely and it can be expected that all components of Polyol TD have a low potential for adsorption to sediment. Therefore, degradation simulation testing in sediment does not need to be conducted. The octanol-water partition coefficient for Reaction mass of 2-ethylpropane-1,3-diol (DMP) and 5-ethyl-1,3-dioxane-5-methanol (CTF) and propylidynetrimethanol (TMP) components are log Pow = 0.19 (CTF), -0.2 (DMP) and -0.8 (TMP).
Simulation Biodegradation Test test design is the standard information requirement for substance registered for 100 tonnes or more per year (Annex IX, Section 9.2.1.2., column 1, of the REACH Regulation). Since general adaptation possibilities of Annex XI as well as specific adaptation possibilities of Annexes VI to X (and column 2 thereof) of the REACH Regulation are not adequate to generate the necessary information, a simulation testing on ultimate degradation in surface water is planned according to ECHA's decision.
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