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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Description of key information

The substance is not expected o bioaccumulate (BCF ≤ 43).

Key value for chemical safety assessment

BCF (aquatic species):
43 dimensionless

Additional information

Aluminium dihydrogen triphosphate is an inorganic phosphate and will dissociate aluminium and triphosphate ions and further hydrolysed forming various aluminium species and soluble orthophosphate (PO43-) in sewerage systems, sewage treatment plants and in the environment.

The phosphate anion (PO43-) is ubiquitous in natural waters and essential micronutrient for many organisms, it will not bioaccumulate in organisms and food chains.

The bioaccumulation potential of aluminium dihydrogen triphosphate (CAS 13939-25-8) was tested in a GLP guideline study according to OECD 305 under the flow-through conditions. The stock solution of the test item was prepared using sodium polyacrylate as dispersant. Test fish (Cyprinus carpio) were exposed to test concentrations of 4.735 mg/L and 0.4735 mg/L respectively. The test was terminated after 28 days. At a substance concentration of 4.735 mg/L a BCF value ≤ 43 was determined, whereas a BCF ≤ 4.8 was determined at a test substance concentration of 0.4735 mg/L.

The study results demonstrate that the potential of aluminium dihydrogen triphosphate (CAS 13939-25-8) to bioaccumulate and the risk of secondary poisoning are low.