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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Administrative data

Link to relevant study record(s)

Description of key information

WIth high probability, not harmful to soil macroorganisms when inroduced with appropriate precautions

Key value for chemical safety assessment

Additional information

Data on the toxicity of the reaction mass of ammonium sulphate and potassium sulfate and sodium sulphate to soil macroorganisms are not available. Therefore the toxicity of single components of the reaction mass is evaluated separately. No studies are available for sodium sulphate or potassium sulfate; however, based on the lack of toxicity found in studies with aquatic organisms and the fact that both sodium and potassium are essential elements for living organisms, they are not expected to be harmful to terrestrial arthropods. Therefore, ammonium sulphate toxicity was used for the assessment of terrestrial toxicity. Ma et al. (1990) studied long-term effects (20 yr) on nitrogenous fertilizers usage on lumbricid earthworms in soil (cited in OECD SIDS 2007). This study revealed that ammonium sulphate (5 applications per year of 60 - 180 kg N/ha had effects on earthworm numbers and biomass. However, these effects were attributed to the lowering of pH observed in parallel with ammonium sulphate application in the absence of liming.