Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 233-297-2 | CAS number: 10108-73-3
- 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
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- from 03 Nov 2005 to 18 Apr 2006
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- thermal analysis
- Remarks:
- and capillary method
- Melting / freezing pt.:
- 57 °C
- Decomposition:
- no
- Conclusions:
- The melting point of cerium trinitrate was determined to be 57°C.
- Executive summary:
Melting point was assessed using two methods: thermal analysis and capillary method, according to OECD guideline 102 .
A test item amount of 45.12 mg was heated up from 25°C to 400°C at a rate of 20°C/min during a preliminary test (DSC).
The quantities of heat absorbed or released were measured by Differential Scanning Calorimeter and recorded.
As in the temperature range investigated several peaks were observed that could not be identified clearly, a capillary pre-test was performed by heating up the samples from 25°C to about 400°C at a rate of 20°C/min.
The capillary pre-test showed that the first peak observed in the DSC run corresponds to the melting of the test item. Therefore, further DSC runs were performed in the immediate vicinity of the peak temperature (from 25°C to 100°C) with the temperature rise adjusted to 5°C/min.
In both runs of main test with DSC, the melting was recorded at 57°C.
Reference
PRELIMINARY TESTS:
The DSC-curve showed several endothermic heat effects with the first peak starting at 58.2°C. After the experiment, the sample had lost about 58% of its mass and was yellowish and powdery. In the second pre-test using capillary method, the test item started melting at about 54°C.
MAIN TEST:
In both runs of the main test the melting was determined at 57°C. The sample lost about 0.6 and 1.1% of its mass during both tests and became molten and colourless.
Description of key information
The melting point of cerium trinitrate was determined in a GLP study to be 57°C following differential scanning calorimetry analysis in accordance with EC test method A.1 (Weissenfeld, 2006).
Actually, the main test is not really complete as the event at 57°C is concluded to be due to melting. Hence, also the conclusion (melting point = 57 °C) is not correct. On the basis of available information on this substance and other rare earth nitrates, it is assumed that the reaction observed is rather solubilisation in hydration water than melting. It is assumed that the real melting point is > 400 °C.
Key value for chemical safety assessment
Additional information
Visual observations showed that the substance was molten and colourless after the 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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.