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Diss Factsheets
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EC number: 209-090-8 | CAS number: 555-31-7
- 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
Hydrolysis
Administrative data
Link to relevant study record(s)
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2000
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: limited documentation available for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Defined amounts of test substances were dissolved in distilled water and stirred for 4 hours at room temperature, followed by quantitative analytical investigation by gas chromatography to determine amount of free alcohol formed. Recalculation of degree of hydrolysis
- GLP compliance:
- no
- Radiolabelling:
- no
- Analytical monitoring:
- yes
- Details on sampling:
- Solution was filtered and filtrate was quantitatively analysed by gas-chromatographic method, by a method specifically developed for this purpose.
- Details on test conditions:
- In a 200 ml vessel, equipped with reflux condenser and stirrer 1 mmol of aluminium triisopropylate was added to a defined amount of water and stirred (600 rpm) for 4 hours at room temperature. The process was visually controlled and the solution thereafter was filtered to remove insolubles and the filtrate was quantitatively analysed for the amount of free alcohol formed.
- Duration:
- 4 h
- pH:
- 8.5
- Temp.:
- 20
- Initial conc. measured:
- 100 mmol/L
- Number of replicates:
- 1
- Positive controls:
- no
- Negative controls:
- no
- Statistical methods:
- A series of different aluminium alkoholates have been measured using the developed method
- Test performance:
- Aluminium triisopropylate in lump dissolved immediately following addition to water, resulting in a white suspension.
- Transformation products:
- yes
- No.:
- #1
- Details on hydrolysis and appearance of transformation product(s):
- Isopropanol was followed by quantitative GC to determine degree of hydrolysis by comparing isopropanol formed versus theoretical amount of isopropanol formed upon complete hydrolysis.
- % Recovery:
- < 1.9
- pH:
- 8.5
- Temp.:
- 20 °C
- Duration:
- 4 h
- pH:
- 8.5
- Temp.:
- 20 °C
- DT50:
- < 4 h
- Type:
- not specified
- Details on results:
- 98.1% of theoretical amount isopropanol was found in the aqueous phase indicative of immediate hydrolysis of the test subsatnce upon contact with water. The pH was not controlled by buffer solutions but measured to be 8.5 at the end of the experiment.
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- In this experiment it was shown that aluminium triisopropylate reacts instantaniously with water forming almost quantitatively isopropanol and aluminium 3+ species while a pH of 8.5 is established (concentration 1 mol/L).
- Executive summary:
In this experiment it was shown that aluminium triisopropylate reacts instantaniously with water forming almost quantitatively isopropanol and aluminium 3+ species while a pH of 8.5 is established (concentration 1 mol/L). At this pH the aluminium species present are mainly
Al(OH)4-, Al(OH)3and Al(OH)2+ (see Langmuir et al. 2004, Issue paper on the environmental chemistry of metals, US EPA Contract #68 -C-02 -060) - the identity of aluminium3+ species was not determined in this experiment.
Reference
Description of key information
Aluminium triisopropylate reacts instantaneously with water to form isopropanol and Al3+ species. The resulting pH being weakly alkaline indicates according to Langmuir et al. 2004 that Al3+ species formed are mainly Al(OH)4-, Al(OH)3 and Al(OH)2+ at pH 8.5.
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 4 h
- at the temperature of:
- 20 °C
Additional information
Aluminium triisopropylate reacts instantaneously with water to form isopropanol and Al3+ species. The resulting pH being weakly alkaline indicates according to Langmuir et al. 2004 that Al3+ species formed are mainly Al(OH)4-, Al(OH)3 and Al(OH)2+ at pH 8.5.
Thus, aluminium triisopropylate is abiotically degradable and forms isopropanol being readily biodegradable as shown in the registration dossier of isopropanol submitted by the same lead registrant.
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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