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Environmental fate & pathways

Adsorption / desorption

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Link to relevant study record(s)

Reference
Endpoint:
adsorption / desorption: screening
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance has a low octanol water partition coefficient and the adsorption potential of this substance is related to this parameter
the study does not need to be conducted because the substance and its relevant degradation products decompose rapidly

Description of key information

No study was required to determine adsorption/desorption coefficients for this substance. However, a screening exercise for assessing risk to soil and sediment organisms requires a Koc to be derived using equilibrium partitioning theory, therefore the standard algorithm for non-hydrophobic substances was used (see ECHA Guidance on Information Requirements and Chemical Safety Assessment, Chapter R.16)

Key value for chemical safety assessment

Koc at 20 °C:
0.01

Additional information

Koc was derived using the following calculations:

Koc = 1.26 x Kow0.81 / 1000

= 1.26 x 5.750.81 / 1000

= 0.01

where:

Kow (n-octanol/water partition coefficient) = 5.75

[LogKoc: -2.0]