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EC number: 233-135-0 | CAS number: 10043-01-3
- 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
Mode of degradation in actual use
Administrative data
- Endpoint:
- mode of degradation in actual use
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Reliable without restrictions. Guideline study.
Data source
Reference
- Reference Type:
- review article or handbook
- Title:
- PRIORITY SUBSTANCES LIST ASSESSMENT REPORT of Aluminium chloride, nitrate and sulphate,
- Author:
- Canadian Environmental Protection Act, 1999 ,
- Year:
- 1 999
- Bibliographic source:
- Environment Canada Health Canada, p. 17 2008
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: (CEPA 1999)
- GLP compliance:
- not specified
- Type of study / information:
- ASSESSMENT REPORT
Test material
- Reference substance name:
- Aluminium sulphate
- EC Number:
- 233-135-0
- EC Name:
- Aluminium sulphate
- Cas Number:
- 10043-01-3
- Molecular formula:
- Al.3/2H2O4S; General formula Al2(OH)x(SO4)(3-x/2), with x=0 and x=3 and x ranging from 0 to 3.
- IUPAC Name:
- Aluminium sulphate
- Details on test material:
- - Name of test material (as cited in study report):aluminium sulphate
Constituent 1
Results and discussion
Any other information on results incl. tables
Aluminum sulphate will not degrade in surface water and goes into solution without undergoing chemicals decomposition.Aluminium ions will remain as aluminium ions.
When released into water, the aluminum sulphate hydrolyses to form aluminum hydroxides.
Reactions between aluminum sulphate, water and associated “impurities” result in the formation of a floc, which separates from the water phase to form alum sludge. A small fraction of the aluminum can stay in the water in either colloidal or dissolved form.The different reactions involved in the formation of aluminum hydroxide in aqueous solutionwasdescribed; the overall reaction can be represented by the following equation:
Al2(SO4)3+ 6H2O<=>2Al(OH)30+ 3H2SO4
The aluminum hydroxide present in sludge is expected to remain mostly solid following release into surface water.Experiments were showed that less than 0.2% of the aluminum hydroxide present in sludge was released in supernatant water at a pH of 6 and less than 0.0013% was released at pH 7.65. In both cases, aluminum hydroxide was present mostly in particulate form. At these pH values, aluminum solubility is low and kinetics favour the formation of solid aluminum hydroxide.
The anhydrous form occurs naturally as a rare mineral millosevichite, found e.g. in volcanic environments and on burning coal-mining waste dumps. Aluminum sulphate is rarely, if ever, encountered as the anhydrous salt. It forms a number of different hydrates, of which the hexadecahydrate Al2(SO4)3•16H2O and octadecahydrate Al2(SO4)3•18H2O are the most common. The heptadecahydrate, whose formula can be written as [Al(H2O)6]2(SO4)3•5H2O, occurs naturally as the mineral alunogen.
When heated between 770 and 860°C Aluminum sulphatedecomposes to produce Aluminium oxide and Sulfur trioxide.It combines with water forming hydrated salts of various compositions
770 - 860°C
Al2(SO4) => 2Al2O3 + 6SO2+ 3O2
Al2(SO4)3+ 6 NaHCO3→ 3 Na2SO4+ 2 Al(OH)3+ 6 CO2
When used to treat sewage water, aluminium sulphate will also react with phosphate, as shown in the following reaction:
Al2(SO4)3+ 2PO43– <=>AlPO4(s) + 3SO42–
Applicant's summary and conclusion
- Conclusions:
- When is hydrolyzed aluminium sulfate form the aluminium hydroxide precipitate and a dilute sulfuric acid solution
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