Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 260-300-4 | CAS number: 56634-95-8
Endpoint summary
Administrative data
Description of key information
Not readily biodegradable (37% biodegradation in 28 days; OECD 301 B); based on RA to 2,6-dibromo-4-cyanophenyl octanoate (CAS 1689-99-2)
DT50 in sediment at 20 °C: <2 to 4 hours (4.2 to 8.5 hours, recalculated to 12 °C), aerobic conditions; based on RA to 2,6-dibromo-4-cyanophenyl octanoate (CAS 1689-99-2)
DT50 in freshwater at 20 °C: >1000 days, aerobic conditions; based RA to 3,5-dibromo-4-hydroxybenzonitrile (CAS 1689-84-5)
DT50 in soil at 19.4 °C: 0.14 – 0.62 days (0.28 – 1.25 days, recalculated to 12 °C), aerobic conditions; based on RA to 2,6-dibromo-4-cyanophenyl octanoate (CAS 1689-99-2)
Additional information
The assessment of the ready biodegradability is based on data available for the structural analogue 2,6-dibromo-4-cyanophenyl octanoate. According to OECD Guideline No 301B, the substance is not readily biodegradable.
The assessment of the biodegradation in water/sediment is based on data available for the structural analogue 2,6-dibromo-4-cyanophenyl octanoate in a simulation study, according to GLP and BBA Part IV. In two different sediments the formation of 14CO2 after 100 days accounted for 55.4 and 57.2%, respectively, of the applied radioactivity. The determined DT50 of the test compound ranged from <2 to 4 hours (4.2 to 8.5 hours, recalculated to 12 °C).
Moreover, the degradation of the structural analogue [14C]- 3,5-dibromo-4-hydroxybenzonitrile (CAS 1689-84-5) was investigated in natural water samples incubated in the dark under aerobic conditions at a temperature of 20 ± 2 °C in accordance with the OECD Test Guideline No. 309. The test-item remained stable under the conditions of the test (DT50 = >1000 days).
The assessment of the biodegradation in soil is based on data available for the structural analogue 2,6-dibromo-4-cyanophenyl octanoate. Following GLP and OECD Guideline 307, the test substance degraded with a half-life of 0.14 – 0.62 days (0.28 – 1.25 days, recalculated to 12 °C) in three different soils. After 35 days 29.4 – 55.1% of the applied radioactivity were mineralized.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
