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EC number: 203-915-5 | CAS number: 111-85-3
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
To determine the biodegradation of n-Octylchloride in water only one reliable study is available. The key study (91 -0582 -FGO), owned by the ministry of Economy, Trade and Industry of Japan, was conducted according to OECD Guideline 301 C (Ready biodegradable: Modified MITI Test (I) - improved type for volatile substances). The test revealed a biodegradation (BOD) of n-Octylchlorid of 74% to 81% after 28 days. The 10 -d window criterion does not apply for the MITI test according to OECD guideline 301 C. The biodegradability by GC was determined to 100% proving the test item to be readily biodegradable.
Futher studies were performed according to the modified Sturm-test method (Carbon Dioxide Evolution Test). These studies were disregarded due to the fact that the method used is not suitable for highly volatile substances (see OECD TG301 p.3 "Applicability of Test Methods"). Further, volatilization was not followed (e.g. via an abiotic sterile control) in these studies. Therefore, the studies do not allow a conclusion regarding ready biodegradability/mineralization.
An additional not well documented study (88 -0824 -DKO) is available. In this study the DOC removal was followed. Although the documentation of this study is limited the results support the conclusion that the substance is very volatile and disappears during the incubation time if volatilization is not prevented.
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