Registration Dossier
Registration Dossier
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EC number: 237-875-5 | CAS number: 14038-43-8
Endpoint summary
Administrative data
Description of key information
Adsorption: The target chemical Prussian blue is strongly adsorbed to geolite. Goethite is common component of soil.
Additional information
Adsorption:
The target chemical Prussian blue is hydrolyzed at higher pH values, the liberated hexacyanoferrate ions are strongly sorbed at the iron oxide hydroxides that already exist in the soil or that have just been formed by hydrolysis of the Prussian blue.
The results obtained indicate that the interaction of Prussian blue colloids and of dissolved hexacyanoferrate ions with goethite can strongly retard the transport processes of these compounds in soils. These processes help to immobilize Prussian blue in soils. Since free cyanide ions quickly form hexacyanoferrate ions with the ubiquitous iron ions of the soil, the iron ions are also responsible for trapping damped cyanides in soils. Goethite is found all over the planet, usually in the form of concretions, stalactitic formations, oolites (a form consisting of tiny round grains cemented together), reniform (kidney shapes) or botryoidal (globular, like bunches of grapes) accumulations.
The target chemical Prussian blue is strongly adsorbed to geolite. Goethite is common component of soil.
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