Registration Dossier
Registration Dossier
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EC number: 259-423-6 | CAS number: 54982-83-1
Endpoint summary
Administrative data
Description of key information
Air: Based on estimation with the QSAR model AopWin the substance undergoes in air rapid degradation after reaction with hydroxyl radicals with a DT50 value of 8.18 hours, using the SMILES ((O=C(OCCOC(=O)CCCCCCCCC1)C1). No ozone reaction estimation could be made with AopWin. The estimated half-life is much shorter than 2 days, which is the cut off time for reaching the stratosphere. The substance is therefore not expected to reach the stratosphere and is not a long-range transported chemical in air according to the UNECE criteria (http://www.unece.org/fileadmin/DAM/env/documents/2000/ece/eb/ece%20eb%20air.60.e.pdf). This means that the substance does not have an ozone depletion potential because it does not contain halogens and does not have the potential to reach the stratosphere (EU CLP, EC 1272/2008 and its amendments).
Water: No experimental hydrolysis information is available. Zenolide is an ester and therefore some hydrolysis may be expected. A test was not needed because Zenolide is readily biodegradable.
Additional information
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