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EC number: 289-064-0 | CAS number: 85959-68-8
- 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 terrestrial plants
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to terrestrial plants: short-term
- Data waiving:
- other justification
- Justification for data waiving:
- other:
Reference
Description of key information
No toxicity to terrestrial plant tests have been performed with DTPA-Fe(NH4)2.
As supporting information the results of toxicity to terrestrial plants for a number of EDTA-complexes is included in this dossier. These results are not recalculated to DTPA-Fe(NH4) as these results are not read across and are only included to demonstrate the low terrestrial toxicity observed for these EDTA-complexes and anticipated similar low toxicity of DTPA-complexes for the terrestrial compartment.
One toxicity to terrestrial plant tests is performed with EDTA-ZnK2 according to OECD 208 using three different plant species. the lowest NOEC of 125 mg test item/kg dw was observed for shoot wet weight of Brassica napus (rape). The lowest EC50 of 491 mg test item/kg dw was also observed shoot wet weight of Brassica napus (rape). The test item contained 90.4% active ingredient. The effect data based on active are then: NOEC of 113 mg a.i./kg dw was observed for shoot wet weight of Brassica napus (rape). The lowest EC50 of 444 mg a.i./kg dw also for Brassica napus (rape)
One toxicity to terrestrial plant tests is performed with EDTA-FeNa according to OECD 208 using three different plant species. the lowest NOEC of 37 mg test item/kg dw was observed for shoot wet weight of Glycine max (soy bean). The lowest EC50 of 430 mg test item/kg dw was also observed shoot wet weight but for Brassica napus (rape). The test item contained 100% active ingredient. The effect data based on active are therefore identical to that of the test item.
The study from Fiebig (2019) which was performed with EDTA-CuK2 according to OECD TG 208 gave a lowest EC50 of 225 mg test substance/kg dw for the number of emerged seedlings of soybean. The batch of EDTA-CuK2 had an active ingredient content of 92%. The EC50 based on active ingredient is then 207 mg a.i./kg dw.
Two additional older supporting study results with EDTA salts or complexes are available which evaluated different end-points (vegatative vigour and seedling emergence) in different plant species. In the 21d veg vigour study (Evangelou et al., 2006) a true NOEC could be established, while in the 14d seedling emergence test (Geebelen et al., 2002) no effect was observed at the highest tested dose.
As a worst-case the result of the lowest value observed i.e. a NOEC of 37 mg/kg dw is used for DTPA-Fe(NH4)2.
Key value for chemical safety assessment
- Long-term EC10, LC10 or NOEC for terrestrial plants:
- 37 mg/kg soil dw
Additional information
The hazard assessment of DTPA-Fe(NH4)2 reveals neither a need to classify the substance as dangerous to the environment, nor is it a PBT or vPvB substance. The substance is expected to have a low potential for adsorption based on its ionic structure under environmental relevant pH conditions and its low log Kow , the low log Kow also indicates that the substance will not be bioaccumulative. There are no further indications that the substance may be hazardous to the environment.
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