Reaction mass of 2-[[[2-[(2-aminoethyl)amino]ethyl]amino]carbonyl]-benzoic acid and 2,2' -[iminobis(2,1-ethanediyliminocarbonyl)]bis-benzoic acid and 7,8,9,10,11,12,20,21,22,23,24,25-dodecahydrodibenzo[i,t] [1,4,7,12,15,18] hexaazacyclodocosine-5,13,18,26(6H,19H)-tetrone

Adsorption / desorption

Description of key information

No determination was possible according to Method 121 of the OECD Guidelines for Testing of Chemicals, 22 January 2001.

Additional information

No determination was possible according to Method 121 of the OECD Guidelines for Testing of Chemicals, 22 January 2001, due to the following reason:

 ·        A preliminary assessment of the eightmain constituents of the test itemindicated that all eight would be at least partially ionized across the entire environmentally relevant pH range (pH 5 to 7). 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 sorbent as well as a variety of other parameters (Boethling, R. S.1994. Environmental aspects of cationic surfactants.InJ. 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 each test item constituent will be significantly higher than any K_ocvalues determined by the OECD 121 method and via any computer-based K_ocestimation software.

 

Therefore, based on the expected high cation-exchange ability of the eight, main test item constituents, the test item is anticipated to be essentially immobile in the environment.