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EC number: 231-176-9 | CAS number: 7440-67-7
- 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
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
The solubility of Zr depends on the chemistry of the medium which will lead to chemical reactions (hydrolysis, complexation), in particular the pH value and the species present in the solution (see speciation information in section 5.1).
A Transformation/Dissolution conducted following OECD guideline 29 gives a water solubility of zirconium < 0,05 mg/L
Key value for chemical safety assessment
- Water solubility:
- 0.05 mg/L
- at the temperature of:
- 20 °C
Additional information
Several independent sources of information indicate that zirconium is insoluble and very stable in water.
The solubility of Zr depends on the chemical reactions (hydrolysis, complexation) occurring in the environment which are mainly influenced by the pH and the species present in the solution.A Transformation/Dissolution was conducted following OECD guideline 29 ( Guidance Document on Transformation/Dissolution of Metals and Metal Compounds in Aqueous Media)
The preliminary test indicates a no solubility of the test item at pH 6, pH 8 and at pH 2 buffer (< 0.05mg/L which is the detection limit)
As pH has a significant influence on transformation/dissolution the full test should in principle be carried out at a pH that maximises the concentration of the dissolved metal ions in solution. With reference to the conditions generally found in the environment, a pH of 6 was chosen to carry out the confirmation test.
The confirmation test carried out at pH 6 over a period of 7 days shows that the test item does not give any dissolved Zr metal ion above the detection limit.
The long term transformation/dissolution endpoint (obtained during a 28 days transformation/dissolution test, using a single load of 1 mg/L) was not performed, according to the 7 days test results, this test was not considered as relevant, regarding the poor solubility with a 100mg/L loading.
The solubility of Zr in the absence of complexant is < 0.05 mg/LInformation 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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.