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Toxicity to terrestrial arthropods

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Description of key information

No relevant effects.

Key value for chemical safety assessment

Additional information

This endpoint is covered by the category approach for soluble iron salts (please see the section on physical and chemical properties for the category justification/report format).

Testing for this endpoint has been waived in accordance with column 2 and Annex XI, part 3, restrictions.

There are no standard terrestrial toxicity tests reported in the literature, but data on effects of soluble iron salts in irrelevantly high concentrations in food are known from the literature. Thus these experiments are not relevant as this exposure path is irrelevant assessment.

From the U.S. EPA (2003) literature search and evaluation the following information is available. Efroymson et al. (1997) provide some information on the toxicity of iron to terrestrial arthropods. The reviewed study (Nottrot et al 1987) evaluates the effects of iron in the diet of a springtail (Orchesella cincta) fed green algae (Pleurococcus spp.) containing various concentrations of iron for 21 days. Percent growth, feeding activity, and molting were determined. Growth of the springtails was reduced 42 % by a diet containing 7'533 mg/kg of iron, but a diet containing 3'515 mg/kg of iron had no effect. The publication of Nottrot et al (1987) does not provide sufficient details (e.g. with regard to soil organic matter and pH) and was thus rejected for the assessment. Nonetheless the data may indicate the level of effects and may be used in a weight of evidence approach.

  • Efroymson RA, Will ME, Suter II GW (1997). Toxicological Benchmarks for Contaminants of Potential Concern for Effects on Soil and Litter Invertebrates and Heterotrophic Process: 1997 Revision. Prepared for the U.S. Department of Energy Office of Environmental Management under budget and reporting code EW 20 under contract DE-AC05-84OR21400. Report no. ES/ER/TM-126/R2
  • Nottrot F, Joosse ENG, van Straalen NM (1987). Sublethal effects of iron and manganese soil pollution on Orchesella cincta (Collembola). ISSN 0031-4056 Pedobiologia 30:45-53
  • U.S. EPA United States Environmental Protection Agency (2003). Ecological Soil Screening Levels for Iron Interim Final OSWER Directive 9285.7-69. Self-published U.S. EPA, Office of Solid Waste and Emergency Response, Washington, DC, U.S.A. 44 p.