Registration Dossier
Registration Dossier
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EC number: 221-218-4 | CAS number: 3033-29-2
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
By read-across to Dioctyltin oxide, Dioctyltin mercaptopropionate is categorised as not readily biodegradable.
Read across to structurally similar substance DOTO (Dioctyltin oxide CAS No. 870-08 -6)
Under the conditions of an OECD 301F and EU method C.4 -D guideline study, DOTO has been categorised as not readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
Read across to structurally similar substance DOTO (Dioctyltin oxide CAS No. 870-08 -6)
The ready biodegradability of the test substance was assessed in a Manometric Respirometry test conducted in accordance with OECD guideline 301F and EU method C.4 -D and to GLP. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
Under the conditions of the test, the test substance degraded approximately 2 % within 28 days of incubation with activated sludge. Two of the flasks performed with the test substance gave negligible oxygen consumption, whilst the third gave 8 % within 28 days. All controls performed as part of the test were demonstrated that the test system was operating correctly and the test substance exhibited no toxic effect on the inoculum. All validity criteria of the guideline were met. Therefore, under the conditions of the test, the test substance can be categorised as not readily biodegradable.
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