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Diss Factsheets
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EC number: 237-401-7 | CAS number: 13772-29-7
- 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
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study according OECD 111
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 995
- Report date:
- 1995
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 111 (Hydrolysis as a Function of pH)
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Zirconium bis(hydrogen phosphate)
- EC Number:
- 237-401-7
- EC Name:
- Zirconium bis(hydrogen phosphate)
- Cas Number:
- 13772-29-7
- Molecular formula:
- H3O4P.1/2Zr
- IUPAC Name:
- hydrogen phosphate;zirconium(4+)
Constituent 1
Study design
- Analytical monitoring:
- yes
- Details on sampling:
- Inductively Coupled Plasma Atomic Emission was used to monitor the test substance.
Duration of testopen allclose all
- Duration:
- 5 d
- Temp.:
- 50 °C
- Initial conc. measured:
- < 0.1 other: ppm P
- Duration:
- 5 d
- Temp.:
- 50 °C
- Initial conc. measured:
- < 0.005 other: ppm Zr
Results and discussion
- Preliminary study:
- This test is designed to provide information on the concentration of ionic species produced in the environment when the substance undergoes either hydrolysis or degradation under conditions which render the substance soluble. The test is carried out at three pH conditions to simulate acidic, neutral and alkaline soil conditions and at elevated temperature conditions. The zirconium content and the phosphorus content of saturated solutions of the test substance were
monitored by Inductively Coupled Plasma Atomic Emission Spectrometry over a period of 1 week. The results of the test, expressed in parts per million of the elements, are presented in Table 1.
The detection limit ofthe instrument for zirconium was 0.005 ppm.
The results indicate that there was no appreciable solubility of the substance at the three pH values at the elevated test temperature of 50°C.
The slight increase in the zirconium concentration value of 0.005 ppm zirconium at pH 9.0 on the final day of test was not considererd to be significant in terms of solubiUty
Any other information on results incl. tables
Table 1: Results of the test, expressed in parts per million of the elements (detection limit = 0.005 ppm)
Time | pH 4.0 | pH 7.0 | pH 9.0 | |||
Zr | P | Zr | P | Zr | P | |
Initial |
<0.005 | <0.1 | <0.005 | <0.1 | <0.005 | <0.1 |
Day 1 |
<0.005 | <0.1 | <0.005 | <0.1 | <0.005 | <0.1 |
Day 2 |
<0.005 | <0.1 | <0.005 | <0.1 | <0.005 | <0.1 |
Day 3 |
<0.005 | <0.1 | <0.005 | <0.1 | <0.005 | <0.1 |
Day 4 |
<0.005 | <0.1 | <0.005 | <0.1 | <0.005 | <0.1 |
Day 5 |
<0.005 | <0.1 | <0.005 | <0.1 | 0.005 | <0.1 |
Applicant's summary and conclusion
- Conclusions:
- Due to the low solubility of the test item hydrolysis of the test substance could not be detected.
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