Registration Dossier
Registration Dossier
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EC number: 201-783-3 | CAS number: 87-91-2
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
OECD Guideline 301 D, GLP, key study, validity 1:
85% biodegradation after 28 days, within the 14-day window .
Readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
To assess the biodegradation potentiel of the registered substance, one key study is available.
In this valid study, the ready biodegradability of the registered substance has been determined by the Closed Bottle Test according to the OECD Guideline 301D with GLP statement. The test substance was exposed to river water at a concentration of 4 mg/L with culture medium in closed bottles in the dark at 22-24 °C for 7, 14, 21 and 28 days. The degradation of the test material was assessed by the measurement of oxygen consumption.
The test substance was biodegraded 85% at day 28. Over 60% biodegradation was achieved in a period of approximately 8 days immediately following the attainment of 10% biodegradation. The test substance therefore fulfilled the 14-day time window criterion for ready biodegradable substances (14-day time window can be applied to the Closed Bottle test where measurements are limited to prevent the test becoming too unwieldy). In conclusion, the registered substance is classified as readily biodegradable. In addition, the test substance did not cause a reduction in the endogenous respiration. The registered substance is therefore considered to be non-inhibitory to the inoculum.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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