Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

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Additional information

No experimental studies on the fate and partitioning of gold in environmental media have been performed. The hydrolysis study was not considered scientifically necessary and therefore it was waived as gold is not expected to undergo hydrolysis in the environment due to a lack of hydrolysable functional groups. The biodegradation study has been waived as the substance is an inorganic.

 

A GLP complaint OECD 106 guideline test is available with tetrachloroauric acid (Klawonn 2016) and a read across of the data to gold has been considered appropriate.A limited partitioning study with three soils was performed to determine the Kd values. The approach was considered adequate for the information requirements.The Kd values of 16185.05, 1878.31 and 595.32 were determined for Soil 2.3, 2.4 and 6S, respectively, after 48 h.The Koc values of 2415679.1, 94864.0 and 34411.7 were determined for Soil 2.3, 2.4 and 6S, respectively, after 48 h.