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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
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 27 Jul - 16 Aug 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- GLP guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- adopted in 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- adopted in 1995
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Department of Health, London, UK
- Type of method:
- differential scanning calorimetry
Test material
Constituent 1
- Specific details on test material used for the study:
- Storage conditions: room temperature in the dark
Results and discussion
Melting / freezing point
- Key result
- Atm. press.:
- ca. 1 013 hPa
- Decomposition:
- yes
- Decomp. temp.:
- > 224.8 °C
Any other information on results incl. tables
Results
The thermographic data for determinations 1 to 6 are shown in the following table.
Table 2
Thermal event |
Interpretation |
Temperature |
|||
Determination 1 |
Determination 2 |
||||
[°C] |
[K] |
[°C] |
[K] |
||
Sharp endotherm |
Loss of volatiles |
89.78 |
362.9 |
89.47 |
362.6 |
Sharp endotherm |
Loss of volatiles / water |
112.31 |
385.5 |
111.90 |
385.1 |
Sharp endotherm |
Loss of volatiles |
224.88 |
498.0 |
224.11 |
497.3 |
Thermal event |
Interpretation |
Temperature |
|||
Determination 3 |
Determination 4 |
||||
[°C] |
[K] |
[°C] |
[K] |
||
Sharp endotherm |
Loss of volatiles |
89.54 |
362.7 |
89.54 |
362.7 |
Sharp endotherm |
Loss of volatiles / water |
111.96 |
385.11 |
112.07 |
385.2 |
Sharp endotherm |
Loss of volatiles |
225.19 |
498.3 |
225.15 |
498.3 |
Thermal event |
Interpretation |
Temperature |
|||
Determination 5 |
Determination 6 |
||||
[°C] |
[K] |
[°C] |
[K] |
||
Broad endotherm |
Loss of volatiles |
70.66 |
343.8 |
68.32 |
341.5 |
Overall result: The test item does not melt or boil before decomposition occurs above 224.8 °C (498.0 K). As the test item did not melt, no melting point could be determined. As the test item decomposed, no value for boiling point could be determined.
Discussion
Determinations were carried out in pre-pierced crucibles from ambient to 450 °C in nitrogen and air at a rate of 20 °C/min to determine if there was a boiling point (determinations 1 to 4), the residues obtained were a black solid with approximately 50% loss in weight. Manually pierced crucibles were used for testing from ambient to 140 °C in air at a rate of 1 °C/min to establish if there was a melting point (determinations 5 to 6), the residues obtained were a yellow powder with approximately 10-15% loss in weight.
Similar thermographic profiles were obtained using air and nitrogen atmospheres. This indicated that the decomposition seen at 224.8 °C (498.0 K) was probably thermal and not oxidative.
Thermographic profiles (determinations 1 to 4) show transitions at 89.6 °C (362.7 K) and 112.1 °C (385.2 K), combine these transitions with the information from determinations 5 and 6, test item heated to only 140 °C, providing a residue after heating of a yellow powder with approximately 10-15% loss of weight for all determinations. A metal block determination providing visual investigation for this temperature region, showing that the test item began to “sweat” within the same temperature regions. The sample contains approximately 13% water, information supplied by sponsor, therefore these transitions can be concluded to be the loss of low boiling point volatiles and/or water within the test item.
Conclusion
The test item did not melt or boil before decomposition occurs above 224.8 °C (498.0 K). As the test item decomposed prior to melting, the melting and boiling points could not be determined.
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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