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EC number: 871-500-1 | CAS number: 2268679-24-7
- 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:
- supporting study
- Study period:
- 2017-12-06
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Determination of the melting point by the thermoanalytical technique DSC
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- ca. 248 °C
- Remarks on result:
- not determinable
- Remarks:
- The test item shows no melting point.
- Conclusions:
- The Substance has no a melting point and decomposes before boiling
- Executive summary:
A determination of the thermal stability of the test item by DSC (Differential Scanning Calorimetry) was performed with a DSC Mettler TOLEDO DSC 1, using a perforated crucible.
The Substance has no melting point and starts decomposing at ca. 248°C.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2017-12-06
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Determination of the melting point by the thermoanalytical technique DSC
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- ca. 248 °C
- Remarks on result:
- not determinable
- Remarks:
- The test item shows no melting point.
- Conclusions:
- The Substance has no a melting point and decomposes before boiling.
- Executive summary:
A determination of the thermal stability of the test item by DSC (Differential Scanning Calorimetry) was performed with a DSC Mettler TOLEDO DSC 1, using a closed crucible.
The Substance has no melting point and starts decomposing at ca. 248°C.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2020
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- similar to Kofler hot bar
- Deviations:
- yes
- Remarks:
- : hot bar PROLABO, temperature is homogenous on the hot bar
- Principles of method if other than guideline:
- Technic similar to the Kofler Hot bar.
Apparatus PROLABO, temperature is homegenous at every point of the hot bar. Use of a rheostat to slow down the increase of the temperature. - GLP compliance:
- no
- Type of method:
- other: similar to Kofler hot stage
- Key result
- Melting / freezing pt.:
- >= 115 °C
- Atm. press.:
- ca. 1 013 hPa
- Remarks on result:
- other: As the test stopped at 123.5°C, no decomposition occured.
- Conclusions:
- Under normal conditions of pressure, the Substance has a melting point of 115°C.
- Executive summary:
Under normal conditions of pressure, the Substance has a melting point of 115°C. The assay was stopped after reaching 123°C (no decomposition occured).
Referenceopen allclose all
Description of key information
Melting point temperature
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 115 °C
Additional information
3 tests were performed to determine the melting of the Substance :
- one hot bar test
- two DSC (with perforated and closed crucible)
Method used
|
Melting point temperature
|
Decomposition temperature
|
Hot bar method
|
115 °C |
Test stopped at 123°C, no decomposition occurred |
DSC n°1 with perforated crucible 2017 batch 708033
|
75.16°C |
~ 248°C |
DSC n° 2 with closed crucible 2021 batch 013431 |
76.10°C |
~ 248°C |
The DSC n°1 (perforated crucible) shows an endothermic reaction between 53.04 and 118.34°C, with a peak of – 20.39 kJ/kg at 75.16°C. Then an exothermic phase starts at around 248°C, consistent with the beginning of the decomposition of the test item.
The DSC n°2 (closed crucible) shows an endothermic reaction between 57.02 and 124.37°C, with a peak of – 18.68 kJ/kg at 76.10 °C. Then an exothermic phase starts at around 248°C, consistent with the beginning of the decomposition of the test item.
An endothermic peak in a DSC heating curve, performed with a Mettler Toledo apparatus is a melting peak if :
- sample weight does not decrease significantly over the course of the peak, and
- the sample appears to have visibly melted after the measurement, and
- the surface area of the peak is between about 120 Jg-1 to 170 Jg-1 for non-polymeric organic substances, and
- the half-width of the peak is significantly less than 10 K (i.e. 10°C).
The surface area of the peaks of the two DSC is very low (--20.39 kJ/kg), which is << of the 120 kJ/kg cut off value. However, no data is provided concerning the half-width of the peaks and concerning the weight and the appearance of the sample appearance after the endothermic peak and before the exothermic one.
Therefore, the endothermic peaks observed at 75/76°C do not fulfil all the criteria of a melting point.
Conclusion: The Substance has a melting point of 115°C and starts decomposing at temperature > 248°C.
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