Registration Dossier
Registration Dossier
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EC number: 477-700-1 | CAS number: 883794-93-2
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The substance is not readily biodegradable under the test conditions according to the OECD criteria.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable but failing 10-day window
Additional information
The biodegradation of Bis(2,8,9-Trioxa-5-aza-1-silabicyclo(3.3.3)undecane-1-propane-)disulfide (CAS 883794-93-2) was tested in two GLP Guideline studies. However, the test substance is susceptible to hydrolysis and thus the hydrolysis products were tested in these studies together with the parent compound. The key study was performed according to OECD 301B. A degradation of 64% was observed based on CO2 evolution after 28 d. The 10-day window was not met. Thus, the substance is not readily biodegradable according to the OECD criteria but can be classified as readily biodegradable (failing 10-day window). The silanol hydrolysis product can be considered as not readily biodegradable. The amino alcohol hydrolysis product can be considered as readily biodegradable according to OECD guideline criteria (ESIS IUCLID DS).
The supporting study according to OECD 301F resulted in 42% biodegradation based on O2 consumption. Based on this result, the substance is not considered to be readily biodegradable according to the OECD criteria.
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