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There is only one study available concerning the bioaccumulation of bis(2-ethylhexyl) hydrogen phosphate in fish.

The study was carried out at the National Institute of Technology and Evaluation, Japan following the national standard procedure which corresponds to the OECD Guideline 305 C.

Cyprinus carpio was exposed to bis(2-ethylhexyl) hydrogen phosphate at concentrations of 0.1 mg/l and 1 mg/l under flow-through conditions. After reaching a steady state of uptake and elimination, the remaining fish were transferred to a flow-through system containing clean water. BCF values in the range between 1.1 and 6 were determined.

These results are in accordance with the calculated log Kow of 2.88 for the dissociated form of bis(2-ethylhexyl) hydrogen phosphate. The results show no indication of a bioaccumulation potential due to the exposure of the organisms via water.