Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

The substance does not hydrolyze, as it has no hydrolysable groups. In water, the substance is dissociated in ferrocyanide (Fe(CN)6)4- and the corresponding cation (Na+). The ferrocyanide complex is stable in water, however when exposed to sunlight it decomposes to cyanide ions, which are more toxic. In nature only the upper part of water is exposed to sunlight, potentially resulting in some degradation to cyanide ions, while lower parts are of course less or not exposed to sunlight, thus resulting in no (or more limited) degradation of the ferrocyanide complex. Due to the inorganic nature of the substance standard biodegradation testing systems are not applicable. Based on the high water solubility and the ionic nature, the anion is not expected to adsorb, while the cation can absorb to soil but sodium is generally available in the environment (soil, water). The substance is not expected to bioaccumulate to a significant extent as it is highly water soluble, it exists in a dissociated form in an aqueous solution, its oral and/or dermal absorption in mammals is only limited namely estimated to be 10%, it has a low bioaccumulation potential and no significant adverse effects are observed in a chronic mammalian toxicity study. Such a substance has a low potential for bioaccumulation.

Based on the physico-chemical properties, water is expected to be the preferable compartment of this substance.