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Diss Factsheets
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EC number: 209-599-5 | CAS number: 587-26-8
- 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
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption
- Remarks:
- adsorption
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Acceptable, well documented publication which meets basic scientific principles
Data source
Reference
- Reference Type:
- publication
- Title:
- Distribution, speciation and bioavailability of Lanthanides in the Rhine-Meuse estuary, the Netherlands
- Author:
- Moermond, C.T.A. et al.
- Year:
- 2 001
- Bibliographic source:
- Environ. Toxicol. Chem. 20(9): 1916-1926
Materials and methods
- Principles of method if other than guideline:
- The method for estimation of the partition coefficient was not specified.
- GLP compliance:
- not specified
- Type of method:
- other: no data
- Media:
- sediment
Test material
- Reference substance name:
- Lanthanum
- EC Number:
- 231-099-0
- EC Name:
- Lanthanum
- Cas Number:
- 7439-91-0
- Molecular formula:
- La
- IUPAC Name:
- lanthanum
1
- Radiolabelling:
- not specified
Study design
- Test temperature:
- 15 °C
Batch equilibrium or other method
- Analytical monitoring:
- yes
- Details on sampling:
- - Surface-water samples and sediments (through 25-cm-deep, box-core sampling) were collected during June and July 1997 at a location in the Rhine-Meuse estuary at turn of tide (Nieuwe Maas, km 1006). The location was relatively clean (in comparison with other locations used in this investigation with further objectives).
- Details on matrix:
- - Surface-water samples and sediments (through 25-cm-deep, box-core sampling) were collected during June and July 1997 at a location in the Rhine-Meuse estuary at turn of tide (Nieuwe Maas, km 1006). The location was relatively clean (in comparison with other locations used in this investigation with further objectives).
- Surface- and pore-water samples were obtained by positive-pressure filtration (0.45-mm filters, 142 mm diam.) of the water and sediment samples under aerobic and anaerobic conditions, respectively.
- organic carbon (%): 2.13 (range 0.88-2.81), derived from six different locations in the Rhine-Meuse estuary, one of these is the location used in the present examination. - Details on test conditions:
- For every assay, two acid-rinsed polystyrene aquaria (replicates) were filled with sediments (1750 g wet weight) and seawater (4 L) from the appropriate location. Standard conditions: pH = 8.1, salinity 30 ‰, no addition of complexing agents, exposure time 10 d.
Further assays were conducted with diversified conditions:
- varying pH: 7.1, 7.7, 8.1 and 8.5;
- varying salinity: 10, 20 and 30‰
- addition of complexing agents: 500 mg H(PO4)2-, 400 µg F-
Results and discussion
Adsorption coefficientopen allclose all
- Type:
- Koc
- Value:
- ca. 469 484 - ca. 8 348 730
- Type:
- log Koc
- Value:
- ca. 5.67 - ca. 6.92
Any other information on results incl. tables
For a sediment/pore water Kd, Csolid refers to sediment and Cdiss to pore water:
standard conditions (pH = 8.1, salinity 30‰): log Kd = approx. 4.75
varying pH: Lowering as well as increasing pH caused the Kd to decrease, indicating increased complexation in the water phase (exception: pH = 7.1)
pH = 7.1: log Kd = approx. 4.8
pH = 7.7: log Kd = approx. 4.7
pH = 8.5: log Kd = approx. 4.0
varying salinity: decreasing salinity caused the Kd to increase:
salinity 20‰: log Kd = approx. 5.1
salinity 10‰: log Kd = approx. 5.25
addition of complexing agents: addition of phosphate or fluoride caused the Kd to increase:
addition of phosphate: log Kd = approx. 5.25
addition of fluoride: log Kd = approx. 4.9
All treatments were tested against the standard condition (pH 8.1, Sal = 30‰, no addition) and appeared to be significantly different at p < 0.0005 (paired t-test).
The organic carbon fraction in the sediment was 2.13% (range 0.88 -2.81).
Hence the Koc can be calculated according to the equation:
Koc = (100%/oc%)*Kd
Taken into account all results of Kd presented above, the resulting log Koc was in a range of 5.67 - 6.92.
Applicant's summary and conclusion
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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