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EC number: 238-485-8 | CAS number: 14484-69-6
- 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

Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.005 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.048 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 0.36 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.729 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.073 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 0.143 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
PNEC water:
Fluoride may enter the environment from both natural (volcanoes, weathering of minerals and marine aerosols) and anthropogenic sources. The latter include the use of production and use of potassium tetrafluoroaluminate. The concentration of fluoride in natural waters depends on the geological, physical and chemical characteristics at the location. In surface waters that are influenced by F-containing rock formation the natural F-concentration is considerably higher. Water of small rivers in the highlands of (e.g.) contained up to 4.7 mg/L (Geochemischer Atlas, 1985). High fluoride levels (>20 mg/L) are also reported in natural waters from other European communities (WHO, 1984). The median F-concentration in measured from 2000 to 2008 in several Dutch rivers is 0.2 mg/L (www.waterbase.nl). In seawater, F-concentrations are higher than in freshwater with an average of 1.4 mg/L (Slooff et al., 1988). The substantial variation in background levels throughout means that a PNEC derived from standard tests is not directly applicable to regions with high natural F-levels. Therefore the background concentration is added to the derived PNEC based on fluoride (PNEC freshwater, added and PNEC marine water, added). The median concentration in Dutch rivers is taken as the background level for freshwater. For marine water values from Slooff et al. (1988) are taken into account.
PNEC soil:
The mean fluoride concentration in mineral soil is 200 to 300 mg/kg; whereas that of organic soils is generally lower (97 mg/kg). In the fluoride concentrations in clay soils range from 80 to 700 mg/kg dw. In soils with higher pH values a higher amount of soluble F-complexes is found (Slooffet al. 1988). Because the variation in background levels throughoutis substantial, the Dutch reference value is used as the PNEC soil (the reference value is the environmental quality standard at which the soil is considered “clean” and can fulfill all possible functions (VROM, 2000)).
Conclusion on classification
As inorganic compound, potassium tetrafluoroaluminate is not biodegraded but abiotic dissociation and subsequent interactions occur instead. Nonetheless, for classification purposes, inorganic substances are to be considered as non-rapidly degradable. Ecotoxicity data for three trophic levels (fish, invertebrates and alga) are available from the structural analogue multiconstituent aluminium potassium fluoride. From these data a critical effect value for classification of >10 mg/L was derived (fish 96h-LC50). Correction for the molecular weight of potassium tetrafluoroaluminate lowers the critical effect value to >8.9 mg/L, therewith passing the >10 mg/L cut-off value for classification as aquatic chronic category 2 (H412) and thus leading to a more stringent classification than its structural analogue. However, in the fish study at the maximum tested concentration of 10 mg/L no mortality and no signs of abnormal behaviour were reported. Therefore, the more stringent classification is considered not to be in proportion to the slight decrease of the critical effect value due to recalculation for molecular weight. Based on these considerations, and in line with the classification of its structural analogue multiconstituent aluminium potassium fluoride, potassium tetrafluoroaluminate is classified as chronic to the environmental category 3; H412 (Harmful to aquatic life with long lasting effects) according to the EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008. For the same reasons, the substance is classified as R52 -53 (Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment) according to Directive 67/548/EEC.
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