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No terrestrial toxicity studies have been performed on trisodium trimetaphosphate for the following reasons:

Trisodium trimetaphosphate will ultimately breakdown to give phosphate and sodium ions (as detailed in section 5.1 and 5.2 of this dossier). Both phosphate and sodium are ubiquitous in the environment and are found naturally in soil, water and sediment. Sodium and phosphate will be assimilated by species residing in the sediment and is necessary to maintain a good chemical balance in soils, water and sediment.

Due to the natural occurrence of the constituent breakdown products of trisodium trimetaphosphate in the environment and given the extensive use of inorganic phosphates as soil fertilizers and the natural occurrence of the ions in the environment it is unlikely that inorganic phosphates of this nature would have a detrimental effect on soil microorganisms and hence toxicity studies are scientifically unjustified.