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Environmental fate & pathways

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Description of key information

A GLP-compliant OECD 106 guideline test is available with tetrachloroauric acid (Klawonn 2016). 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, 1827.01 and 595.32 were determined for Soil 2.3, 2.4 and 6S, respectively, after 48 h. The Koc values of 2415679.1, 92273.4 and 34411.7 were determined for Soil 2.3, 2.4 and 6S, respectively, after 48 h.

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

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