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EC number: 680-378-7 | CAS number: 138624-11-0
- 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
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2004-01-30
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 004
- Report date:
- 2004
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Deviations:
- not applicable
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
Test material
- Reference substance name:
- sodium;(4-amino-1-hydroxy-1-phosphonobutyl)-hydroxyphosphinate
- Cas Number:
- 121268-17-5
- Molecular formula:
- C4H12NaNO7P2 · 3 H2O
- IUPAC Name:
- sodium;(4-amino-1-hydroxy-1-phosphonobutyl)-hydroxyphosphinate
- Test material form:
- solid: particulate/powder
Constituent 1
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: sponsor and 005Y030
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Room temperature
- Solubility and stability of the test substance in the solvent/vehicle: Not soluble in either the Sodium Borate buffer and the FMOC derivitizing agent
TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: Dissolved into a stock solution of 0.01 mol Alendronate Sodium / L octanol saturated water.
- Final dilution of a dissolved solid, stock liquid or gel: 1:1, 1:2, 2:1 ratios of water to octanol solutions were prepared from the stock solution to a quanitity of 15 mL
FORM AS APPLIED IN THE TEST (if different from that of starting material)
1:1, 1:2, 2:1 ratios of water to octanol solutions, each containing 3,250 mg Alendronate Sodium / L, were preapred in triplicate.
Study design
- Analytical method:
- high-performance liquid chromatography
Results and discussion
Partition coefficientopen allclose all
- Key result
- Type:
- Pow
- Partition coefficient:
- ca. 0.019
- Temp.:
- 22.5 °C
- pH:
- ca. 5
- Key result
- Type:
- log Pow
- Partition coefficient:
- ca. -1.73
- Temp.:
- 22.5 °C
- pH:
- ca. 5
- Details on results:
- The octanol/water partition coefficient of Alendronate Sodium® was determined by analyzing the concentration of the test substance in the water phase after the samples reached partition equilibration. Alendronate Sodium® peaks were present in the water portion sample chromatographs. However, the
concentration in the octanol portion was inferred as the difference between the known concentration of test substance administered to the vessels prior to mechanical shaking, and the actual value of the test substance obtained in the analysis of the water phase.
The estimated Pow at a 1:1 octanol to water ratio ranged from 0.010 to 0.020, with a mean of 0.015 and a standard deviation of 0.005. The estimated Pow at a 1:2 octanol to water ratio ranged from 0.018 to 0.028, with a mean of 0.023 and a standard deviation of 0.005. The estimated Pow at a 2:1 octanol to water ratio ranged from 0.013 to 0.023, with a mean of 0.018 and a standard deviation of 0.005. The estimated log Pow values ranged from -1.64 to -1.82. This fulfilled the requirement that the log Pow values fall within± 0.3 units.
Applicant's summary and conclusion
- Conclusions:
- This study met the criteria to validly determine the octanol/water partition coefficient of the test substance according to the noted guideline.
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