Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

To determine the adsorption / desorption of MK92K, a screening test conducted in accordance with OECD 121 indicated that due to its multi component nature MK92K displayed a range of Log Koc values from <1.25 to 5.40. Similarly, MK92K displayed a range of Log Pow values from <0.24 to 3.93, with a significant proportion of the components having Log Pow values < 3. Whilst there is some potential for adsorption on the basis of these data, it is considered that the significant proportion of MK92K is mobile and water soluble. Additionally, the nature of MK92K makes assessment of hydrolysis technically challenging. MK92K is considered to be a UVCB substance comprising multiple components, of similar chemical functionality, in varying proportions. A quantitative assessment of these components would therefore present considerable technical difficulty as there is not considered to be an analytical method that is sufficiently sensitive, and so a more detailed assessment in accordance with OECD 106 for example would not be technically possible. All other testing sections were not required at the specified tonnage levels.