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Diss Factsheets
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EC number: 951-477-5 | 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
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Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Jul. 25, 2019 to Jul. 28, 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 020
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: HT/T 153
- Version / remarks:
- 2004
- Deviations:
- no
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Version / remarks:
- 2000
- GLP compliance:
- yes
- Type of method:
- column elution method
Test material
- Reference substance name:
- Sodium Nickel Manganese Magnesium Titanium Dioxide (Crystal phase: O3/P2/RS)
- EC Number:
- 951-477-5
- Molecular formula:
- Na1-δNivMnwMgxTiyO2, where the ranges are 0 < δ < 0.2, 0.2 < v < 0.4, 0.4 < w < 0.6, 0.02 < x < 0.2, 0.02 < y < 0.2
- IUPAC Name:
- Sodium Nickel Manganese Magnesium Titanium Dioxide (Crystal phase: O3/P2/RS)
- Test material form:
- solid: particulate/powder
Constituent 1
Results and discussion
Water solubility
- Key result
- Water solubility:
- >= 19.6 - <= 69 200 µg/L
- Conc. based on:
- test mat.
- Temp.:
- 20 °C
- pH:
- ca. 7.2
Applicant's summary and conclusion
- Conclusions:
- The results indicated that, under test temperature (20±0.5 ºC), the concentration of element sodium and nickel were 13724 μg/L and 3.86 μg/L, respectively. And the element magnesium, manganese and titanium were not detected. The water solubility of test substance calculated by sodium was 69.2 mg/L, the water solubility of test substance calculated by nickel was 19.6 μg/L, and the water solubility of test substance calculated by elements (magnesium, manganese, and titanium) were undissolved. So, the water solubility of test substance was between 19.7 μg/L and 69.2 mg/L
- Executive summary:
According to “The guidelines for the testing of chemicals” (HJ/T 153-2004), “The Guidelines for the Testing of Chemicals – Physical-Chemical Properties and Physical Hazards” (the 2nd edition, Beijing: China Environment Press. 2013) and with reference to Procedure 105 of the “Guidelines for Testing of Chemicals” of the OECD: “Water Solubility” (2000), the water solubility test for the substance was conducted.
Because the solubility of the test substance was less than 10-2 g/L in the preliminary test, column elution method was adopted to test the water solubility of the test substance. According to the information provided by the sponsor, what will happen is an ion-exchange with the sodium-ion in the material and hydrogen from the water to create sodium hydroxide. What is left is a sodium poor substance with birnessite structure. It is expected that around 40-50% of the original sodium is extracted from the structure. So this means that we would have Sodium hydroxide, our original substance and same sodium poor substance with birnessite structure.
The results indicated that, under test temperature (20±0.5 ºC), the concentration of element sodium and nickel were 13724 μg/L and 3.86 μg/L, respectively. And the element magnesium, manganese and titanium were not detected. The water solubility of test substance calculated by sodium was 69.2 mg/L, the water solubility of test substance calculated by nickel was 19.6 μg/L, and the water solubility of test substance calculated by elements (magnesium, manganese, and titanium) were undissolved. So, the water solubility of test substance was between 19.7 μg/L and 69.2 mg/L.
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