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Diss Factsheets
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EC number: 215-150-4 | CAS number: 1306-38-3
- 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
Oxidising properties
Administrative data
Link to relevant study record(s)
- Endpoint:
- oxidising solids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- from 10 jun 2005 to 13 Oct 2005
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.17 (Oxidising Properties (Solids))
- Version / remarks:
- Cited as Directive 92/69/EEC, A.17
- Deviations:
- yes
- Remarks:
- Ignition source: use of a platinum wire heated by electrical power instead a direct flame. This modification has no effect on the conclusion.
- GLP compliance:
- yes
- Contact with:
- powdered cellulose
- Key result
- Sample tested:
- other: test item / cellulose mixtures containing 10 to 90% test item in 10% increment weight
- Parameter:
- mean burning time
- Remarks on result:
- other: The test item did not burn.
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- Cerium dioxide has no oxidizing properties under the conditions of the test.
- Executive summary:
The determination of the oxidising properties of cerium dioxide was performed according to EU Method A17 under GLP compliance using a powder train about 250 mm long. The test item was mixed with a combustible substance, being powdered cellulose. The test item / cellulose mixtures contained 10-90% test item in 10% increment by weight. As a reference, a baryum nitrate / cellulose mixture was prepared. A pile of each mixture is ignited with the hot wire, and the burning time is recorded. No flame propagation was observed with each mixture of test item and cellulose. So cerium dioxide has no oxidizing properties.
Reference
Preliminary test:
Reference mixture (barium nitrate / cellulose - ratio 2/1) took 89 seconds to burn.
The combustion of the substance mixture (test item / cellulose - ratio 2/1) stopped immediately.
Main study:
Nominal proportion of test item (%) |
Weight of cellulose (g) |
Weight of Test item (g) |
Burning time (s) / Remarks |
10 |
13.547 |
1.511 |
Ignition by the hot wire, but no flame propagation |
20 |
11.975 |
2.953 |
Ignition by the hot wire, but no flame propagation |
30 |
10.524 |
4.465 |
Ignition by the hot wire, but no flame propagation |
40 |
9.016 |
5.974 |
Ignition by the hot wire, but no flame propagation |
50 |
7.479 |
7.558 |
Ignition by the hot wire, but no flame propagation |
60 |
5.999 |
9.033 |
Ignition by the hot wire, but no flame propagation |
70 |
4.485 |
10.487 |
Ignition by the hot wire, but no flame propagation |
80 |
2.955 |
11.972 |
Ignition by the hot wire, but no flame propagation |
90 |
1.488 |
13.509 |
Ignition by the hot wire, but no flame propagation |
The test item did not burn.
CERIUM DIOXIDE has no oxidising properties under the conditions of the test.
Description of key information
The bulk form of cerium dioxide has no oxidizing properties under the conditions of the test.
Key value for chemical safety assessment
- Oxidising properties:
- non oxidising
Additional information
One experimental study, scored as Klimisch 1, is available and selected as a key study. It reveals that the bulk form of cerium dioxide has no oxidizing properties.
Justification for classification or non-classification
Based on the above data, the bulk form of cerium dioxide does not require a classification regarding its oxidising properties under CLP.
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