Registration Dossier
Registration Dossier
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EC number: 939-633-0 | CAS number: 705279-64-7
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Readily biodegradable: 83% in 28 days (OECD 301F, Manometric Respirometry Test)
Key value for chemical safety assessment
Additional information
No experimental data evaluating the biodegradation of Glycerides, C8-21 and C8-21-unsaturated, mono- and di-, acetates (C10)(CAS No. 97593-30-1) are available. Therefore, a ready biodegradability study from a structurally related category member, Glycerides, C8-21 and C8-21-unsaturated, mono- and di-, acetates (C12)(CAS No. 97593-30-1) is used as read-across in accordance with Regulation (EC) No. 1907/2006, Annex XI, 1.5. Both substances are esters formed from the combination between acetylated fatty acids and glycerol as alcohol component. These two substances are structurally identical except for the length of their main fatty acid component (being either C10 or C12). Considering that biodegradation decreases with longer C-chain lengths, reading across from the substance with the C12 to the one with C10 is a worst-case and therefore, justified.
One study evaluating the potential for ready biodegradability of Glycerides, C8-21 and C8-21-unsaturated, mono- and di-, acetates (C12)(CAS No. 97593-30-1) is available (Weyers, 2007). This test was conducted according to OECD Guideline 301F (Manometric Respirometry Test), under GLP conditions. Domestic activated sludge was used as inoculum, being exposed to the test substance for 28 days at 22 ± 1°C. After 28 days, the test substance reached 83% biodegradation, fulfilling the 10-day window criterion and therefore, it can be considered readily biodegradable.
Based on the results obtained for the structurally similar analogue substance (in accordance with Regulation (EC) No. 1907/2006, Annex XI, 1.5) Glycerides, C8-21 and C8-21-unsaturated, mono- and di-, acetates (C10) can be considered readily biodegradable.
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