Registration Dossier
Registration Dossier
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 231-492-7 | CAS number: 7585-20-8
- 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
The aquatic toxicity of zirconium acetate (a 'water soluble' zirconium compound) is evaluated using data for zirconium acetate as well as data from read across substances such as zirconium basic carbonate (a sparingly soluble zirconium compound) and zirconium dioxide (an insoluble zirconium compound). Read across from insoluble or sparingly soluble zirconium substances is considered acceptable because several experiments (e.g., water solubility study and study on pH dependency of water solubility (Fox, 2013), stirring experiments in fish, algal and daphnid test media (Harris, 2014a,b; Vryenhoef, 2014)) indicated that zirconium from the 'water soluble' zirconium acetate does not stay in solution at environmentally relevant pH levels. Rapid hydrolysis occurs, resulting in precipitation of zirconium hydroxides or zirconium dioxide. Further, heavy complexing will occur with phosphates, which results in 100% precipitation whenever phosphate is present in excess. Complexation with carbonates may also result in progressive precipitation with increasing pH levels. As a result, at environmentally relevant conditions, zirconium acetate cannot be considered as a water soluble compound. Overall, zirconium is not bioavailable in the aquatic environment and therefore no adverse effects are to be expected on aquatic organisms.
Further argumentation for the read across approach is given in the read across document attached to IUCLID Section 13.
Zirconium acetate is concluded not to be toxic (acutely) to fish and aquatic invertebrates. The studies that were used for endpoint coverage (performed with zirconium acetate and/or read across substances) were performed according to internationally accepted guidelines and did not report any acute adverse effects (mortality in fish, immobilization in daphnids) at the limit test concentration of 100 mg/L. In algal growth experiments with read across substances, it was demonstrated that the observed growth inhibition was concurrent with phosphate depletion. Toxicity to algae is therefore due to phosphate deprivation as no primary toxic effects have been observed. Phosphate deprivation is a secondary effect which is not considered relevant at a normal environmental scale. Therefore, no effects on algae are expected in the environment either. Finally, zirconium acetate was not found to be toxic to aquatic microorganisms in an activated sludge respiration inhibition test.
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.
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.

EU Privacy Disclaimer
This website uses cookies to ensure you get the best experience on our websites.