Registration Dossier

Environmental fate & pathways

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Administrative data

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Additional information

The hydrolysis study was not considered scientifically necessary and therefore it was waived as potassium dicyanoaurate is not expected to undergo hydrolysis in the environment. The biodegradation study has been waived as the substance is an inorganic.

A GLP-complaint OECD 106 guideline test is available with potassium dicyanoaurate (Fraunhofer 2016). A limited partitioning study with three soils was performed to determine the Kd values. The approach was considered adequate for the information requirements. At equilibrium time the Koc values of 16144.7, 14526.5 and 17021.2 were determined for Soil 2.3, 2.4 and 6S, respectively. The Kd values of 108.17, 287.62 and 294.47 were determined for Soil 2.3, 2.4 and 6S, respectively.