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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Metal carboxylates such as strontium 2-ethylhexanoate are substances consisting of a metal cation and a carboxylic acid anion. Based on the solubility of strontium 2-ethylhexanoate in water, a complete dissociation resulting in strontium ions and 2-ethylhexanoate ions may be assumed under environmental conditions.

Data for strontium bioaccumulation in freshwater and seawater species is available from several studies. Strontium behaves very similar to calcium and enriches in bones or rather in hard tissues of organisms (ATSDR, Public Health Statement: Strontium; 2004). However, BCFs of hard tissues of freshwater organisms are relatively low and even lower for saltwater species. Reported tissue BAF remain below 100. Limited data on the transfer of Sr up the aquatic food chain indicates that strontium does not biomagnify. Regarding 2-ethylhexanoate, bioaccumulation is not expected based on the n-octanol/water partition coefficient (logPow <3).

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