Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 293-187-5 | CAS number: 91052-28-7
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Readily biodegradable: 76.5% in 28 days (OECD 301B, Modified Sturm Test)
Key value for chemical safety assessment
Additional information
No experimental data evaluating the potential for ready biodegradability of Glycerides,C14-18 and C16-18 unsaturated, mono-, di- and tri- (CAS No. 91052-28-7) are available. Therefore, a ready biodegradability study from a structurally related analogue substance, 1,2,3-propanetriyl trioleate (CAS No. 122-32-7) 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 fatty acids and glycerol as alcohol component. 1,2,3-propanetriyl trioleate is predominantly a triglyceride (the three hydroxyl functional groups of the glycerol molecule are esterified with fatty acids) containing fatty acid components C-chain lengths ranging from C12 (<5%) up to C18 unsaturated (>60%), whereas the target substance contains mainly mono and diesters (triester < 15%) and fatty acid C-chain lengths ranging from C14 (<15%) up to C18 unsaturated (30-85%). Biodegradation for both substances can be expected to be comparable in terms of carbon chain length of the individual fatty acid components (determined basically by the C18 unsaturated content). However, due to the lower triester content of Glycerides,C14-18 and C16-18 unsaturated, mono-, di- and tri-, a higher degree of biodegradation can be expected for this substance. Therefore, read-across from 1,2,3-propanetriyl trioleate would result in a worst-case assumption and therefore, it is justified.
Data evaluating the biodegradation potential of 1,2,3-propanetriyl trioleate (CAS No. 122-32-7) are available. A ready biodegradability test was conducted according to OECD Guideline 301B, under GLP conditions (Coenen, 1991). Activated sludge was exposed for 28 days to the test substance (at 10 and 20 mg/L) and biodegradation was followed by measuring CO2 production in the test vessels. After 28 days, the reference substance (sodium acetate) did not fulfil the validity criterion for this test (60% biodegradation was attained only after 20 days, instead of 14 days). However, considering the extensive observed biodegradation of the test substance in both 10 and 20 mg/L replicates (76.5%) and that 60% was biodegraded within the 10-day window, the results from this test are considered to be valid for further assessment.
Based on the results obtained for the structurally related analogue substance (in accordance with Regulation (EC) No. 1907/2006, Annex XI, 1.5), Glycerides,C14-18 and C16-18 unsaturated, mono-, di- and tri- can be considered as readily biodegradable.
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.
