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Diss Factsheets
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EC number: 233-058-2 | CAS number: 10026-11-6
- 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
Stability:
In contact with water or the moisture of air, Zirconium tetrachloride decomposes instantaneously according to the following equation:
ZrCl4+ H2O -> ZrOCl2+ 2 HCl
Then, ZrOCl2 under environmental conditions will hydrolyse generating HCl and precipitating into ZrO2 according to the equation:
ZrOCl2+ H2O -> ZrO2+ 2 HCl
Therefore, the final degradation product of ZrCl4is ZrO2, which has very low water solubility (0.055 mg/L) and which is thus stable in water. The chemical behaviour ZrO2in water is highly dependent on the water chemistry and the hydroxide species presents in solution that could lead to complex formation.
In terms of environmental toxicity, the relevant degradation product to characterize the effect of ZrCl4to aquatic, benthic and terrestrial organisms is therefore ZrO2(or indirectly ZrOCl2). Thus, most of the studies reported in this dossier are used for a read-across approach from Zirconium compounds leading to the formation of ZrO2.
Biodegradation:
Zirconium tetrachloride is inorganic and can therefore not undergo any microbial degradation in the environment.
Bioaccumulation:
Considering the most stable form of Zirconium tetrachloride in the environment (ZrO2), bioaccumulation is not expected due to the low water solubility of ZrO2(0.055 mg/L). Therefore, the substance will not reach high concentrations in water and will not be bioavailable to organisms, so bioaccumulation can be regarded as negligible.
Adsorption/Desorption:
Relating to the Kd values, Zirconium compounds display strong affinity for the solid phase of the soil particle (mean Koc value of 41044).
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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