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Ecotoxicological information

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Toxicity to soil macroorganisms

Shot-term toxicity to invertebrates

The acute toxicity of KMPS triple salt to Eisenia foetida was determined in a dose-response 14-day test according to the OECD guideline 207. After 14 days of exposure to treated artificial soil the LC50 for earthworms was determined to be >1000 mg KMPS/mg soil. No effects on biomass or behaviour were evident. LC0 = 1000 mg/kg soil LC50 > 1000 mg/kg soil.

Long term toxicity to invertebrates

In accordance to section 9.4.4 of Annex X, long-term toxicity to invertebrates, does not need to be conducted if direct and indirect exposure of the soil compartment is unlikely. An acute toxicity test in Eisenia fetida was done with KMPS triple salt. Up to a test concentration of 1000 mg/L no toxic effect could be observed (LC50 > 1000 mg KMPS triple salt / L). This result shows that KMPS triple salt has a very low acute toxicity to earthworms (IUCLID section 6.3.1). As there are no other indications of concern for the terrestrial compartment, further long-term testing is considered to be scientifically not justified.

Toxicity to terrestrial arthropods

In accordance to section 9.4.1 of Annex IX, short-term toxicity to invertebrates- arthropods does not need to be conducted as direct and indirect exposure of the soil compartment is unlikely. The substance has no high potential to adsorb to soil and is not very persistent. According to the available information of the toxicity test to Eisenia fetida, no toxicity effect could be observed (LC50 > 1000 mg KMPS triple salt / L). This result shows that KMPS triple salt has a very low acute toxicity to earthworms (IUCLID section 6.3.1). As there are no other indications of concern for the terrestrial compartment, further testing to terrestrial arthropods is considered to be scientifically not justified.

Toxicity to terrestrial plants

In accordance to section 9.4.3 and 9.4.6 of Annex IX and X, short- and long-term toxicity to plants, does not need to be conducted as direct and indirect exposureof the soil compartment is unlikely. The substance has no high potential to adsorb to soil and is not very persistent. According to the available information of the toxicity test to Eisenia fetida, no toxicity effect could be observed (LC50 > 1000 mg KMPS triple salt / L). This result shows that KMPS triple salt has a very low acute toxicity to earthworms (IUCLID section 6.3.1). As there are no other indications of concern for the terrestrial compartment, further testing to terrestrial plants is considered to be scientifically not justified.

Toxicity to soil microoganisms

In accordance to section 9.4.2 of Annex IX, effects on soil-organisms does not to be conducted as direct and indirect exposure of the soil compartment is unlikely. The substance has no high potential to adsorb to soil and is not very persistent. According to the available information of the toxicity test to Eisenia fetida, no toxicity effect could be observed (LC50 > 1000 mg KMPS triple salt / L). This result shows that KMPS triple salt has a very low acute toxicity to earthworms (IUCLID section 6.3.1). As there are no other indications of concern for the terrestrial compartment, further testing to terrestrial arthropods is considered to be scientifically not justified.

Toxicity to birds

Toxicity to birds

The dietary LC50 study for Northern Bobwhite exposed to KMPS triple salt was terminated after 1 day of exposure. When dissolved in deionised water to prepare dosing solutions, KMPS triple salt creates an acidic solution, below the normal pH range of the digestive tract of birds. Animal welfare concern prohibited the dosing of an acidic solution that would be certain to cause acid burns in the upper digestive tract. Therefore, the dosing solutions were buffered prior dosing. Subsequent analysis revealed that with buffering KMPS triple salt could not be maintained in solutions. The study was therefore terminated.

Waiver: Toxicity to birds

In accordance to section 9.6.1 of Annex X, reproductive toxicity test to birds does not need to be conducted as a mammalian dataset is available (see toxicological studies) In addition direct and indirect exposure of the soil compartment is unlikely. The substance has no high potential to adsorb to soil and is not very persistent. According to the available information of the toxicity test to Eisenia fetida, no toxicity effect could be observed (LC50 > 1000 mg KMPS triple salt/ L). This result shows that KMPS triple salt has a very low acute toxicity to earthworms (IUCLID section 6.3.1). As there are no other indications of concern for the terrestrial compartment, further testing to terrestrial arthropods is considered to be scientifically not justified.