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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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A comprehensive dataset on the potential for bioaccumulation of sodium dichromate in aquatic organisms is not available. The substance sodium dichromate consists of sodium cations and dichromate anions (Cr2O7(2 -)). Based on the solubility of sodium dichromate in water, a complete dissociation resulting in sodium cations and chromate anions may be assumed under environmental conditions. Therefore, the potential to bioaccumulate in the environment is most accurately evaluated by assessing the fate of its ecotoxicologically relevant moiety, i.e. the chromate anion, and read-across to data available for other (soluble) chromate substances is applied. Please refer to the respective endpoint summary for soluble chromium (VI) substances for further information.

Key value for chemical safety assessment

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