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Environmental fate & pathways

Adsorption / desorption

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Link to relevant study record(s)

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

Description of key information

Adsorption/desorption (Cyrene™/Gem Diol): Low potential for adsorption

Key value for chemical safety assessment

Koc at 20 °C:

Additional information

The substance has low log Kow value (<3) and thus has low potential for adsorption, and the requirement for testing is waived.

For environmental exposure assessment, adsorption is predicted using the ‘non-hydrophobics’ log Kow-based prediction method for log Koc (Sabljic et al., 1995).

The relevant equation is:

Log Koc= 0.52 log Kow + 1.02

Therefore, log Koc for Cyrene™/Gem Diol = 0.23.


Sabljic, A, Güsten H, Verhaar H, Hermens J (1995) QSAR modelling of soil sorption. Improvements and systematics of log KOC vs. log KOW correlations. Chemosphere Volume 31, Issues 11–12, December 1995, Pages 4489–4514.

[LogKoc: 0.23]