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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

Description of key information

Screening and/or higher tier studies investigating the adsorption potential of propyl gallate do not need to be conducted due to the low octanol water partition coefficient of log Kow = 1.8 of the substance. The adsorption potential of the substance is related to this parameter. Therefore, the Koc can be estimated from Kow as outlined in ECHA guidance on information requirements and chemical safety assessment Chapter R.6: QSARs and grouping of chemicals, May 2008. This is a type of SAR which is directly implemented in the TGD and in EUSES. For propyl gallate the following equation was used: logKoc = 0.47 logKow + 1.09 (TGD, Part III, 2003: table 4).

Key value for chemical safety assessment

Koc at 20 °C:
86.3

Additional information