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EC number: 231-099-0 | CAS number: 7439-91-0
- 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
Flammability
Administrative data
Link to relevant study record(s)
Description of key information
Lanthanum metal (massive form) = non flammable
Lanthanum metal (powder form) = flammable solid
Key value for chemical safety assessment
- Flammability:
- flammable
Additional information
Flammability (solids)
Two studies are available to determine the flammability (solids) of the substance. The first study was conducted on the substance in massive (pellet) form; the second was conducted on the substance in powder form. Both studies were conducted to GLP and in line with standardised guidelines EU Method A.10 and UN Method N.1. Both studies were assigned a reliability score of 1 according to the criteria of Klimisch (1997).
In the first study, conducted with lanthanum metal pellets, the test material failed to ignite during the 2 minutes that the Bunsen flame was applied in the preliminary screening test. The result of the preliminary test obviated the need to perform the definitive test. The test material was therefore considered to be non-flammable.
In the second study, conducted with lanthanum metal powder, the test material pile burned with a bright orange flame producing orange sparks and flares. The pile propagated combustion over 200 mm in 11 seconds in the preliminary screening test and propagated combustion over 100 mm in 9 seconds in the main test. Testing was stopped after the first test run of the main test, as the results of the first test run were conclusive. Under the conditions of this study the test material was determined to be a flammable solid (Category 1, according to classification criteria under Regulation 1272/2008).
Flammability (pyrophoric properties)
In accordance with section 1.5 of REACH Annex XI, the study does not need to be performed as based on chemical structure pyrophoric properties are not to be expected.
Flammability (contact with water)
The flammability (contact with water) of the test material was investigated in accordance with the standardised guideline UN Method N.5. The study was awarded a reliability score of 2 in accordance with the criteria of Klimisch (1997).
During the study a sample of test material was placed in 250 ml deionised water at room temperature and the resulting gas measured by gas burette. During the first 8 hours of the test procedure, the volume was recorded at hourly intervals. The test was terminated after 24 hours since the gas development came to a standstill.
In the initial phase (about 8 hours after introduction of water) the gas volume development was 0.37 mL/kg.min or 22.37 mL/kg.h. Since this is below the level that warrants classification under Regulation (EC) 1272/2008 the test material is not considered to be flammable in contact with water.
Flammability additional key value for CSA: non flammable
Justification for classification or non-classification
Lanthanum (massive)
In line with Regulation (EC) 1272/2008, the test material is considered to be unclassified for flammability.
Lanthanum (powder)
In accordance with Regulation (EC) No 1272/2008 and DSD 67/548/EEC, the test material meets the criteria for classification as a flammable solid in powder form, since combustion propagated over a distance of 100 mm taking 9 seconds in the burning rate test.
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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