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EC number: 260-599-1 | CAS number: 57158-29-9
- 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
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Aluminum zirconium chloride hydroxide is an inorganic substance which will rapidly dissociate into aluminum, zirconium, chloride and hydroxide ions upon dissolution in the environment. However, zirconium ions will not remain as such in solution, and the environmental toxicity (if any) will not be driven by zirconium. Therefore, full read-across to other aluminum substances considering a typical aluminum content of ca. 19.4% is justified. The lowest reliable EC10 and EC50 values of 0.051 mg/L and 0.24 mg/L dissolved aluminum derived in a static 72-h growth inhibition test with Pseudokirchneriella subcapitata are recalculated and result in a EC10 and EC50 of 0.263 mg/L and 1.237 mg/L aluminum zirconium chloride hydroxide, respectively.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 1.237 mg/L
- EC10 or NOEC for freshwater algae:
- 0.263 mg/L
Additional information
Aluminum zirconium chloride hydroxide is an inorganic substance which will rapidly dissociate into aluminum, zirconium, chloride and hydroxide ions upon dissolution in the environment. However, zirconium ions will not remain as such in solution. Thus, regarding the environmental fate and toxicity of Aluminum zirconium chloride hydroxide, it can be assumed that environmental fate and toxicity (if any) will not be driven by zirconium. Therefore, full read-across to dialuminum chloride pentahydroxide (CAS #12042-91-0) and other aluminum substances considering a typical aluminum content of ca. 19.4% is justified (see below).
One study with the fresh water green algaeChlorella pyrenoidosa with aluminum chloride is available. The author determined EC30 values, which cannot be used in the assessment. The EC10 (at pH 5) was determined by linear regression by the reviewer based on nominal concentrations, available in the article. The EC10 is 84 µg/l (dissolved Al). Another study with the fresh water green algaePseudokirchneriella subcapitatawith aluminum chloride hydroxide sulfate is available. The test was static and performed at a neutral pH between 7.1 and 8.1 at the start of the test to 8.0 and 8.4 at the end of the test. The nominal test concentrations were between 1.0 and 100 mg/l test material. This resulted in a range of dissolved aluminum concentrations of 0.02 to 2.8 mg/l.
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