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EC number: 203-312-7
CAS number: 105-59-9
Readily biodegradable (according to OECD criteria) in freshwater.
In a study according to OECD guideline 301
A, the test substance was determined to be readily biodegradable
according to OECD criteria in freshwater systems (BASF AG, 1993; Report
no. 93/1749/21/1). Activated sludge from a laboratory wastewater
treatment system using municipal sewage was used as inoculum. The
substance was degraded to 96% after 18 d. The 10 -d window was kept.
This study was selected as key study.
The biodegradability is supported by further
- BASF AG (1988). Report no. 01.0273/88:
Zahn-Wellens test (OECD 302B), industrial activated sludge: 95% after 14
d: easily eliminated from water/inherently biodegradable
- BASF AG (1994). Report no. 94/0989/29/1:
CO2/DOC Combination test (ultimate aerobic biodegradability, ISO 9439),
industrial activated sludge: > 95% after 15 d: inherently biodegradable
In a ready biodegradability test according
to OECD 301 C, the substance was not readily biodegradable (25% after 28
d; JETOC, 2005).
While the substance is readily biodegradable
in freshwater systems, it is not readily biodegradable in seawater as
concluded from an OECD 306 study (BASF SE, 2011; Report no.
00G0087/01x018). The maximum biodegradation of 15% was reached on day
63, the final day of the study. This result is supported by the
published result from Eide-Haugmo et al. (2009), who determined that the
substance is poorly degradable in seawater in an OECD 306 test (< 10%
BOD of ThOD after 28 d).
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.
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