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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
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EC number: - | CAS number: -
- 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:
- weight of evidence
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- > 400 °C
- Atm. press.:
- 1 013.25 hPa
- Remarks on result:
- other: No melting temperature was found between -50 °C and 400 °C.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- capillary method
- Key result
- Melting / freezing pt.:
- > 400 °C
- Atm. press.:
- 1 013 hPa
- Decomposition:
- yes
- Decomp. temp.:
- > 285 °C
- Remarks on result:
- other: At about 320 °C the test item was nearly black without any sign of melting up to 400 °C.
Referenceopen allclose all
Results in detail
Melting temperature
No melting temperature was found between -50 °C and 400 °C.
The estimated accuracy is ± 1 °C.
Observed thermal processes
In the 1st heating a flat broad endothermic area starting at about 25 °C showed the vaporization of volatiles (humidity). An additionally large endothermic peak between about 150 °C and 400 °C showed the vaporization of another volatile component.
In the 2nd heating thermic signals were no longer observed.
A visual assessment after the measurements didn't show any visual change of the test item and it was as powdery as before. This is a clear indication, that the test item did not melt during the measurement at the applied temperatures.
These observations are confirmed by the preliminary measurement using a melting point device.
The observed fluctuation at 250 °C and 300 °C were most probably caused by the evaporation of volatile components, corresponding to the large endothermic peaks in the DSC-measurement.
Results in detail
Melting temperature
No melting of the test item was observed between the start of the measurement at 30 °C and decomposition of the test item starting at about 285 °C.
The estimated accuracy is± 1 °C.
Observed thermal processes
A visual assessment of the measurement shows the beginning of visual change of the test item starting at about 285 °C. After that temperature the test item became darker. At about 320 °C the test item was nearly black without any sign of melting up to 400 °C.
This is a clear indication of decomposition of the test item during the measurement at the applied temperatures.
Description of key information
No meltig point up to 400 °C was observed.
Key value for chemical safety assessment
Additional information
Two GLP studies were conducted.
For form 1 a GLP study was conducted in accordance with the OECD Guideline for the Testing of Chemicals. 102 "Melting Point / Melting Range" using the Differential Scanning Calorimetry. No melting temperature was found between -50 °C and 400 °C.
For form 4 a GLP study was conducted in accordance with the OECD Guideline for the Testing of Chemicals. 102 "Melting Point / Melting Range" using the capillary tube. No melting of the test item was observed between the start of the measurement at 30 °C and decomposition of the test item starting at about 285 °C. At about 320 °C the test item was nearly black without any sign of melting up to 400 °C.
For all forms no melting point up to 400 °C was observed.
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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