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Diss Factsheets
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EC number: 914-920-3 | 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
Endpoint summary
Administrative data
Description of key information
Additional information
Aluminum is a naturally abundant element, the third most common element of the earth's crust. It is naturally released to the environment from the weathering of rocks and volcanic activity. Aluminum present in surface waters due to man-made applications cannot be distinguished from natural aluminum released during weathering of aluminum-bearing minerals. The emission of the registered substance reaction mass of aluminium hydroxide and aluminium nitrate and aluminum sulphate is very low and mainly applies to (waste) water. If released into the environment, the substance will hydrolyse to aluminium hydroxide and precipitates in aquatic system or deposits as aluminium oxide in sediment or soil. Aluminum salts are used as coagulants and flocculants to cause fine materials that are suspended, soluble or both to agglomerate, for subsequent removal via sedimentation and filtration. As part of this agglomeration or coagulation process, most of the aluminum associated with the added aluminum salt hydrolyses to aluminum hydroxide, which precipitates and becomes part of the floc structure. As such, it makes up a part of the sludge generated by the treatment process. Sludge purged from clarifiers or accumulated in sedimentation basins of water treatment plants will not be released directly to the aquatic environment
A small amount of the aluminum added may stay with the finished water in either colloidal particulate (Al(OH)3) or soluble form (e.g., AlOH2+, Al(OH)2+, Al(OH)3, Al(OH)4-), dictated by the conditions of the treatment process and in particular, the pH.
The air compartment is considered not relevant for reaction mass of aluminium hydroxide and aluminium nitrate and aluminium sulphate. Since these aluminum salts are usually not emitted to air, the amount of aluminum present in air that is related to the aluminum salts being considered here would be negligible compared with the amount coming from natural erosion of soil (Environment Canada Health Canada, 2000)
In acidic aquatic systems, aluminium exists in natural waters as a number of species, including dissolved and particulate forms. This again depends on many factors, especially pH, alkalinity, temperature, dissolved organic carbon, dissolved inorganic carbon and anion concentration. Furthermore, hydrolysis of aluminium ions has two possible “directions” towards a neutral pH, i.e. base hydrolysis and acid hydrolysis. Both acid and base hydrolysis of aluminium rapidly results in precipitation of aluminium hydroxide, which can become adsorbed on suspended particles or immobilised in sediment.
As mentioned above, a direct release of reaction mass of aluminium hydroxide and aluminium nitarte and aluminium sulphate to terrestrial environment is negligible. If emitted to soil, depending on the buffer capacity of the soil, reaction mass of aluminate sulfate and aluminium nitrate will be neutralised and decomposes to aluminium hydroxide or oxide (gibbsite), which are stable and can become immobilised in soil. Nevertheless, the fate of aluminium in the terrestrial environment will also depend on local conditions.
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.
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