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EC number: 213-995-3 | CAS number: 1071-76-7
- 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
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- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
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- 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
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- Toxicological Summary
- Toxicokinetics, metabolism and distribution
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- Additional toxicological data

Hydrolysis
Administrative data
Link to relevant study record(s)
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 111 (Hydrolysis as a Function of pH)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.7 (Degradation: Abiotic Degradation: Hydrolysis as a Function of pH)
- GLP compliance:
- no
- Remarks:
- The hydrolysis rate is too fast and rigorous guideline test is not possible.
- Specific details on test material used for the study:
- - Supplier: Borica Co., Ltd.
- Lot number: 210524Y
- Expiration date of the lot/batch: 2018-Dec-24
- CAS number: 1071-76-7 - Radiolabelling:
- no
- Analytical monitoring:
- yes
- Details on sampling:
- Initial observations showed rapid degradation in minutes in diluted form.
Only performed at 'natural' pH; it is known that pH does not influence the rate of degradation of these highly unstable substances.
The concentration of test substance in the test sample was determined at time points between 0 & 60 minutes based on quantification of the hydrolysis product. Sampling point: 0, 5, 10, 25, 40, 60 min. - Buffers:
- - pH: 7
Conc. 0.01 M
pH 7 Phosphate - Duration:
- 60 min
- pH:
- 7
- Temp.:
- 30 °C
- Number of replicates:
- 2
- Positive controls:
- no
- Negative controls:
- yes
- Remarks:
- (Blank buffer solutions)
- Preliminary study:
- The hydrolysis products (transformation products) were identfied.
- Transformation products:
- yes
- No.:
- #1
- Details on hydrolysis and appearance of transformation product(s):
- The solution immediately became cloudy and white precipitation forms when water was added into the Test Substance, indicating the rapid hydrolysis behavior of the Test Substance.
- Key result
- pH:
- 7
- Temp.:
- 30 °C
- DT50:
- <= 5 min
- Validity criteria fulfilled:
- yes
- Conclusions:
- The hydroylsis half-life of the test subsatnce was less than 5 minute.
- Executive summary:
The recorded degradation products are zirconium dioxide and 1-butanol. The organic products are known to biodegrade readily.
Reference
Description of key information
Test conducted according to OECD guideline 111.
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 5 min
- at the temperature of:
- 30 °C
Additional information
Degrades rapidly when diluted in water, with the visible formation of zirconium oxide as a precipitate within minutes of adding to water.
Half-life not possible to measure, but considered to be less than 5 minutes.
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