Registration Dossier

Environmental fate & pathways

Adsorption / desorption

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Administrative data

Link to relevant study record(s)

Description of key information

Adsorption is waived, since the log KOW is considered to be in the range of -0.094 and 0.52 for the individual substructures of the registered substance.

Nevertheless, for deviation of PNEC sediment and soil a log KOC is calculated for the individual substructures using KOC win vs. 2.0 by entering a user presented log KOW.

The most critical log KOC for the derivation of PNECs is the deviated log KOC for Tridecyl-methyl-ammonium chlorid (3xC10). Therefore the respective value is used for the log KOC.

for substructure Methyl-trioctyl-ammonium chlorid (3x C8) the log KOc was deviated to be: 1.12 based on log KOW 0.52

for substructure Decyl-methyl-dioctyl-ammonium chlorid (1xC10;2x C8) the log KOc was deviated to be: 1.05 based on log KOW 0.32

for substructure Didecyl-methyl-octyl-ammonium chlorid (2xC10;1x C8) the log KOc was deviated to be: 0.90 based on log KOW 0.12

for substructure Tridecyl-methyl-ammonium chlorid (3xC10) the log KOc was deviated to be: 0.78 based on log KOW -0.094

Key value for chemical safety assessment

Koc at 20 °C:
6.03

Additional information

[LogKoc: 0.78]