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No experimental data on the phototransformation of the substance in air are available. Based on estimation with the QSAR model AopWin (v1.92) the substance undergoes in air rapid degradation after reaction with hydroxyl radicals. The DT50 value after reaction with hydroxyl radicals is 6.7 hours. The substance will not reach the stratosphere and is therefore not considered to be 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 half-live will not be used for the CSA because it is calculated and not an experimental value.

Key value for chemical safety assessment

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