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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
Endpoint summary
Administrative data
Description of key information
Additional information
Three acute freshwater fish studies were assessed for this endpoint. Two limit tests and one actual determined LC50 value are available. The actual determined concrete LC50 value is used as key value and expressed as DTPA-Fe(NH4)2 amounts to 1063 mg/L.
One valid chronic study with the crimson-spotted rainbowfish was available for assessment. Based on a 28 -day exposure with the crimson spotted rainbowfish, the NOEC for DTPA-Fe(NH4)2 was 123 mg/Lbased on a lack of effects on reproduction.
Five acute toxicity tests with aquatic invertebrates were assessed for this endpoint, and all studies were found to be of good quality and reliable for use in the risk assessment process. The 48-hour LC50 for Daphnia carinata, a freshwater species, was 245 mg/L DTPA acid, which is equivalent to 299 mg/L DTPA-Fe(NH4)2. The 96-hour LC50 for Crangon crangon, a saltwater species, was 6020 mg/L pentasodium DTPA, which is equivalent to 5744 mg/L DTPA-Fe(NH4)2.
Two chronic freshwater studies with DTPA (free acid) were conducted with Daphnia carinata. The 18-day NOEC for reproduction in Daphnia carinata was equivalent to 61 mg/L DTPA-Fe(NH4)2.
A well performed study with DTPA-FeNaH is available for algae. However, due to the photo-instability of the compound and coloration of test solutions, actual measured concentrations showed some unexpected results, making it difficult to conclude based on these geometric mean measured values. Still, based on actual and nominal concentrations the chronic ErC10 value was confirmed > 1 mg/L, indicating low hazard to the environment.
Additional well performed studies with EDTA-FeNa, without the indicated issues above, confirm the low toxicity to algae of these iron chelates, when micronutrient scavenging is taken into account in the experimental set-up.
If not, these substances possess properties indicating a (acute) hazard to algae. However, the effect is associated with the chelation of essential nutrients and is not considered a relevant environmental hazard in view of the abundance of such nutrients in the aquatic environment.
Taken the most reliable data together, the lowest chronic aquatic toxicity value for DTPA-Fe(NH4)2 is the 18 -day NOEC of 61 mg/L based on D. carinata reproduction. Daphnids are considered the most sensitive species and thus most relevant to consider for environmental risk assessment.
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