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EC number: 283-042-4 | CAS number: 84539-54-8
- 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
According to REACH Regulation (EC) 1907/2006, Annex IX, Section 9.2.1.2, a study on abiotic degradation is required. Based on the structure of Fe(3Na)EDDHSA no hydrolysis is expected as no hydrolysable groups are present. The substance can thus be regarded as hydrolytically stable. This is supported by its application and use in aqueous solution. Furthermore, the read-across substance Fe(3K)EDDHSA was also found to be stable in water according to EU Method C.7 at pH 4, 7 and 9 (Groult, 2001). The half-life at 25 °C will be greater than 1 year.
Gómez-Gallego et al. (2005) investigated the photodegradation pathways and products of EDDHA, both as free acid and as complex with Fe3+. The chelating agent EDDHA is rather stable to photodegradation, only at extreme pH values (above or below pH 4 – 8, thus under non-typically environmental conditions), some photoreactivity is observed. Furthermore, the process requires UV-light, at visible light (λ > 313 nm) the photodegradation process is much slower. Different experiments show that Fe3+-EDDHA is very resistant to photochemical degradation.
The phototransformation in water was investigated with the read-across substance Fe(Na)EDDHMA according to the OECD Draft Guideline. The photochemical degradation was determined for the two major components (A and B), resulting in 40.66 and 35.4 hours, respectively at a temperature of 25 +/-3 °C with an light intensity of 4.86E20 photons/second in the wavelength range of 290 - 500 nm (Notox B.V., 1996).
Also the photostability in water of EDDHA/Fe3+ was investigated experimentally as well as the impact on soybean growth by the degradation products
(Hernández-Apaolaza and Lucena, 2010). As result, the chelate was progressively degraded along the 30 day period when it was exposed to direct sunlight. The degradation products (Salicyladehide, salicyclic acid and Salicylaldehydeethylenediamine diimine) did not affect biomass production in soybean plants.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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