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Ecotoxicological information

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Additional information

Substances of the Persulfate Category are inorganic salts sharing the persulfate anion moiety. In accordance to Column 2 REACH Annex IX and X, terrestrial toxicity information requirements, can be waived if the substance has no high potential to adsorb to soil and is not very persistent and if direct and indirect exposure of the soil compartment is unlikely. Direct and indirect exposure of the terrestrial compartment is unlikely as the substance hydrolysis upon contact with water into cation and persulfate anion. Decomposition rates increase with decreasing pH value and increasing temperature. The persulfate anion, independent of the cation, undergoes further decomposition in normal water or acid conditions, readily oxidizing water to oxygen, producing sulphate and hydrogen ions. All persulfate decomposition products are ubiquitous to the environment. Hydrolysis is metal catalyzed, and rapid reaction with organic matter is also possible. Thus persulfates are not expected to be distributed into the terrestrial compartment and consequently not to cause toxicity to terrestrial organisms and plants. Therefore toxicity testing of organisms and plants of the terrestrial compartment was considered scientifically not justified.