Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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: 237-537-7 | CAS number: 13827-02-6
- 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/degradation:
Due to the fact that potassium trifluorozincate is an inorganic substance, only abiotic degradation can be considered. A hydrolysis test was performed as part of a solubility study at varying pH. Although the study was not performed according to GLP criteria or guideline, the results are considered adequate for assessment. In this study, the mol ratio of K-, Zn- and F-ions in solution under acidic and neutral conditions was close to the theoretical ratio of 1:1:3 indicating that full dissociation and no hydrolysis occurs. In alkaline environment, a large amount of fluoride ions was found in solution compared to dissolved zinc. This indicates that at pH 9 hydrolysis of KZnF3 occurs through exchange of fluoride against hydroxyl groups under precipitation of zinc -oxides, -hydroxides and -hydroxyfluorides. Based on the difference between solubility at pH 6 and pH 9, as a gross estimation, hydrolysis at pH 9 is approximately 39 %.
Bioaccumulation:
Bioaccumulation of potassium trifluorozincate is not to be expected as the substance dissociates rapidly into zinc and fluoride. Data is available on uptake of zinc (EU-RAR, 2008) and fluoride ions. For zinc, the majority of BCF values for pelagic species, both invertebrates and fish, lie between 100 and 1.000 (the highest BCF reported in fish is 2.000). BCF values for fish are generally lower than those for invertebrates. In benthic invertebrates such as crabs, oysters and insect larvae, BCFs values in the range between 10.000 and 100.000 have been reported. For aquatic plants BCF values generally range from <100 to 50.000. It should be noted that these values were taken from reviews, which usually do not report whether the BCFs are based on fresh weight or dry weight of the organisms, whether or not the values have been corrected for the background concentration of zinc in the organisms and which exposure concentrations were used. In spite of these limitations, it is concluded that zinc is concentrated by aquatic organisms from the surrounding water, and that the degree of concentration is species-dependent, varying from insignificant in fish and most invertebrates to highly significant in algae and benthic organisms. However, in view of the decreasing BCF values with increasing trophic level in the food web it is concluded that biomagnification is of little significance for zinc.
In the case of fluoride, in aquatic organisms it accumulates primarily in the exoskeleton of crustacea and in the bones of fish. No fluoride accumulation was reported in edible tissues. In fish, BCF-values of 53-58 (d.w.) and <2 (w.w.) were found. In aquatic invertebrates BCF values based on whole body fluoride content are found to be <1 (d.w.). The highest reported BCF-value for Mollusca and aquatic macrophyta were 3.2 and 7.5 (w.w.), respectively. In an experimental marine ecosystem with fish, crustaceans and plants, mild accumulation was noted in all species. The highest value, a BCF of 149 was seen in fish. BCF values for crustacea ranged from 27 -62. In consumption fish, fluoride concentrations of up to 30 mg fluoride/kg were found. Based on all these data, it may be concluded that significant bioaccumulation of fluoride is unlikely to occur.
Adsorption/desorption:
Adsorption of potassium trifluorozincate to soil is not to be expected as the substance dissociates rapidly into various ions. The following information is available on bioaccumulation of zinc and fluoride ions. For zinc a Kp value of 110000 L/kg is determined for suspended matter-water, a Kp value of 73000 L/kg for sediment-water and a Kp value of 158.5 L/kg for soil-water.
For the sorption characteristics of fluoride only qualitataive data are available. Altogether, the immobile character of fluoride in soil is likely to be due mainly to formation ofcomplexes with aluminium, iron or calcium and dependent on the pH and the availability of these counter ions. Although some true adsorption processes are described (e.g. displacement of hydroxide from clay surfaces) these processes are probably of lesser significance. For pragmatic reasons, for environmental exposure assessment a Koc is calculated based on a log Kow of -1 in EUSES (in the EU-RAR for hydrogen fluoride a log Kow of -1.4 is suggested). When using the QSAR for non-hydrophobics (default QSAR), a Koc of 3.16 is determined.
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.