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EC number: 915-179-9 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
LC50 earthworms > 1000 mg/Kg ww
Key value for chemical safety assessment
- Short-term EC50 or LC50 for soil macroorganisms:
- 1 000 mg/kg soil dw
Additional information
The possible effects of Potassium phosphonate (KH2PO3/K2HPO3) on earthworm (Eisenia fetida) were determined in a 14‑days artificial soil study according to the OECD Guideline 207.
Adult earthworms were exposed under defined conditions to artificial soil containingpotassium phosphonateat five concentrations in a geometric series, namely 9.5, 30.5, 97.7, 312.5, 1000.0 mg/kg (dry weight), additionally an artificial soil without test item was tested as negative control.
The exposed organisms were checked for mortality 7 and 14 days after test initiation and for weight change at the end of the test (14 days).
At the test start mean moisture content of the soil was 36.3 % while at the end of the test the mean water content was 33.6 % (measured mean value in negative control and treated soils).
The pH value of artificial soil at the test start was 6.34 for the negative control and ranged between 6.05 – 6.37 for the treated soil. At the end of the test the pH wasthe negative control and ranged between 6.92 - 7.17 for the treated soil.
Temperature ranged between 18.2 °C – 20.7 °C during the test period while light intensity (measured daily) ranged between 631 – 796 Lux.
In the control 0 % mortality was observed after 7 days and after 14 days, which complies with the validity criterion of the test, allowing a maximum mortality of 10 % in the negative control at the end of the test. The obtained experimental results therefore allowed for the determination of valid endpoints, i.e. mortality and the sublethal effect, body weight change. No exterior or behavioural abnormalities in both control and treated earthworms were detected during the test.
Concerning mortality, the LC0, LC100, LC50, the NOEC and the LOEC values at 7 and 14 days were assessed and the LC50 resulted > 1000 mg/Kg d.w.
Concerning the sublethal endpoint weight change, no significant decrease of earthworm’s body weight was shown at any tested concentration at the end of test.
NOEC and LOEC values for this sublethal effect at the end of the test, expressed in terms of of active ingredient concentrations are > 1000 mg/kg d.w. respectively.
The acute toxicity of test item of Potassium phosphonate (KH2PO3/K2HPO3) was tested on earthworms Eisenia fetida in a full test and all endpoints, the LC0, LC100, LC50, the NOEC and the LOEC values at 7 and 14 days, were assessed as equal to or greater than 1000 mg/Kg d. w., for both mortality and change in body weight.
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