Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Hydrolysis

The estimated half-life at 25 °C of the test item has been shown to be greater than 1 year at pH 4 and 7. For pH 9, 38% was lost in 28 days at 50 °C; however, it was considered that although the concentration of test item reduced over time it was most probably not due to hydrolysis.

Biodegradability

Results of biodegradability closed bottle test following the OECD 301D guidelines determined taht benzylated polyamine is not readily biodegrade over the course of the 28-day test, nor it is inhibitory to biodegradation of a reference compound.

Adsorption

No determination was possible according to Method C.19 Adsorption Coefficient of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 121 of the OECD Guidelines for Testing of Chemicals, 22 January 2001, due to the following reason:

An assessment of the test item indicated that it would be positively ionized (protonated amines) across the environmentally relevant pH range. Therefore, it is anticipated that adsorption to the organic carbon content of soils and sediments will not be the dominant mechanism controlling the mobility of the test item in the environment. Adsorption of cationic species occurs primarily by an ion-exchange mechanism and thus depends on the cation-exchange capacity of the soils as well as a variety of other parameters (Boethling, R. S. 1994. Environmental aspects of cationic surfactants. In J. Cross and E. J. and Singer (ed.), Cationic Surfactants: Analytical and Biological Evaluation, vol. 53. Marcel Dekker, Inc., New York, USA.). Consequently, the true adsorption coefficient of the test item will be significantly higher than any Koc value determined by the EC C.19 / OECD 121 method and via any computer-based Koc estimation

Additional information