Registration Dossier
Registration Dossier
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EC number: 931-195-9 | CAS number: -
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Data provided by ECHA under the 12 year rule. Insufficient documentation.
The limited data provided by ECHA indicates that the substance reaches 62% degradation in 28 days when tested at 10 mg/L and 39.3% biodegradation when tested at 20 mg/L. The contrasting results may indicate that the substance moderately inhibits the respiration of aquatic microorganisms. This is supported by the results of the toxicity to microorganisms study, in which an IC50 equal to 111 mg/L was derived and up to 67% inhibition was observed within the range of tested concentrations. However, the ready biodegradation study indicates that microorganisms are able to rapidly degrade the test substance at a concentration of 10 mg DOC/L.
These results indicate that the substance can be readily biodegraded under specific conditions. According to the ECHA Guidance on Information Requirements and Chemical Safety Assessment, Chapter R.7b, the 10-day window does not apply to the test substance if it is made of a composition of homologous constituents. As this is the case for the test substance, the criterion was not considered. The test substance is concluded as readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
- Type of water:
- freshwater
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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