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Link to relevant study record(s)

Description of key information

Deemed photolytically stable, due to ready biodegradability low levels in light flooded upper soil layers expected

Key value for chemical safety assessment

Additional information

Experimental data on phototransformation in soil are not available for the submission item. As this endpoint is not a standard information requirement in REACH and there is no indication from the Chemical Safety Assessment on the need to investigate further the fate and behaviour of the substance (Annex X, 9.3.4. requirement), no further testing is considered necessary.

On the basis of its adsorption properties (Koc >> 427,000 and Log Koc >> 5.63 at 30 °C, Fox & White 2012, Harlan Report no. 41103279) the submission item will adsorb to sludge materials in sewage water treatments plants. If such sludges would be used as fertilizer, it could be shifted to soils, but due to its ready biodegradability and its use pattern, which excludes entering in domestic waste water, low concentrations of the submission item in light flooded upper soil layers seem likely. Regarding the spectral properties of the submission item, i.e. the lack of absorption in the spectral range of natural daylight, direct photodegradation is assumed an irrelevant degradation mechanism.