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EC number: - | CAS number: -
- 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
![](https://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_physical-and-chemical-properties.png)
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- disregarded due to major methodological deficiencies
- Study period:
- From 30 Oct 2003 to 27 April 2004
- Reliability:
- 3 (not reliable)
- Rationale for reliability incl. deficiencies:
- other: See remark.
- Remarks:
- Although the study was performed according to the OECD 107 guideline and under CLP conditions, the Log Pow is not a valid descriptor for assessing the bioaccumulation potential of inorganic compounds. For this reason, the study is disregarded for assessment.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 004
- Report date:
- 2004
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- shake-flask method to: flask method
- Partition coefficient type:
- octanol-water
Test material
- Test material form:
- solid: particulate/powder
- Details on test material:
- Cesium potassium fluoroaluminate, purity 100%
Constituent 1
Study design
- Analytical method:
- other: ICP-MS
Results and discussion
Partition coefficient
- Type:
- log Pow
- Partition coefficient:
- < -3.6
- Temp.:
- 20 °C
- pH:
- 5.7
- Details on results:
- n-Octanol solubility
Preliminary test:
Test substance was stirred with n-octanol for 7 days at 20.2 ± 0.7°C (nominal concentration was 40 g/L). The concentrations of Cesium potassium fluoroaluminate in the supernatant after three and four successive centrifugation steps (3500 g, 5 min., 20°C) were calculated from the Cs and were 2.7x10E-3 g/L and 1.6x10E-3 g/L, respectively.
Because a significant difference was observed between the concentrations analysed after the third and fourth centrifugation steps, it was concluded that not all undissolved test substance had been removed after three centrifugation steps and that the n-octanol solubility of the test substance was ≤ 1.6x10-3 g/L. lt was decided to centrifuge the n-octanol samples from the main study four times and to check the centrifugation step again.
Main study:
Test substance was stirred with n-octanol (in triplicate) at a nominal concentration of approximately 7x10-2 g/L. Duplicate samples were taken from each n-octanol mixture after 24, 48 or 72 hours of stirring. Undissolved test substance was removed by four successive centrifugation steps (3500 g, 5 min., 20°C). The n-octanol phases were analysed for Cs and concentrations of Cesium potassium fluoroaluminate were calculated. The temperature of the climate room was 20.4 ± 0.5°C during the performance of the test.
The 24-, 48- and 72- hour measurements are in agreement. Therefore, the n-octanol solubility of Cesium potassium fluoroaluminate was calculated as the mean value of all measurements.
The 72 hours stirred n-octanol samples were also centrifuged a fifth time. Because no significant difference was observed between the concentrations analysed after the fourth centrifugation step (< 1.47x10E-3 g/L) and fifth centrifugation step (< 1.47x10E-3 g/L), it was concluded that all undissolved test substance had been removed after four centrifugation steps.
Any other information on results incl. tables
Results of the main study n-octanol solubility of cesium potassium fluoroaluminate:
Stirring time (hours |
Concentrations analysed (mg/kg) |
Mean concentration (g/L) |
24 |
< 1.77 / < 1.77 |
< 1.47x 10E-3 |
48 |
< 1.77 / < 1.77 |
< 1.47x 10E-3 |
72 |
< 1.77 / < 1.77 |
< 1.47x 10E-3 |
Mean |
|
< 1.47x 10E-3 |
ln conclusion, the n-octanol solubility of Cesium potassium fluoro aluminate (Cesium 5.64% w/w) at 20.4 ± 0.5°C is reported to be < 1.47x10E-3 g/L.
Water solubility:
The water solubility of Cesium potassium fluoro aluminate at 20.4 ± 0.5°C is 5.99 g/L (NOTOX project 394572). The pH was measured to be 5.7.
Applicant's summary and conclusion
- Conclusions:
- The log kow of cesium potassium fluoroaluminate is lower than -3.6 at 20°C and pH = 5.7.
- Executive summary:
The determination of the partition coefficient (n-octanol/water) of cesium potassium fluoroaluminate was determined according to the OECD 107 guideline and under GLP conditions. Since cesium potassium fluoroaluminate is a salt, both the flask-shaking method and the HPLC-method were not applicable. Because also calculation from the structural formula was not possible, the estimation method was used as the only possible alternative to determine the partition coefficient (n-octanol/water) of cesium potassium fluoroaluminate.
The estimation method is recognised by the international guidelines (EEC, OECD) and estimates the partition coefficient from the quotient of the n-octanol solubility and the water solubility. The solubility of the test substance in n-octanol was determined in the present study. The solubility of the test substance in water was determined in NOTOX project 394572.
The n-octanol solubility of cesium potassium fluoroaluminate at 20.4 ± 0.5°C was determined to be < 1.47x10E-3 g/L. The water solubility of cesium potassium fluoroaluminate at 20.4 ± 0.5°C and pH 5.7 is 5.99 g/L. The partition coefficient (n-octanol/ water), Pow, calculated as a quotient of the n-octanol solubility and the water solubility of cesium potassium fluoroaluminate is < 2.46x10E-4 (log Pow < -3.6).
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.
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