Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

There are no environmental fate data available for the test substance and data were used in read-across from CAS 100545-48-0 for the evaluation of environmental fate. The detail on the compositional basis for use of read-across is established in the Read-Across Report in section 13. Since the chemical composition of the substances are principally made up of the same components at similar levels, then it is also expected that these technical substances would largely undergo similar fate and behaviour processes in the environment.There are no chemical species known to be unique to either the source or target substances.

 

The read-across test substance achieved >20% degradation in the ready biodegradability test (van Ginkel, 2013) and is considered to be inherently biodegradable. The poor water solubility of the test substance at high concentrations led to slow desorption and dissolution rates in the adsorption test by Gancet (2013). The partial degradation (37%) of the test substance in the biodegradation study is thought to have been influenced by the low bioavailability of the substance in water. Under authorised use conditions, exposure to the test substance in the aquatic environment is considered to be at very low concentrations (in the range of µg/l or lower) and, as such, the substance is expected to completely degrade under these conditions (van Ginkel, 2013).

Additional information