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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
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Remarks:
- melting point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From 19 December 2018 to 22 February 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- not specified
- GLP compliance:
- no
- Remarks:
- The study was conducted in a facility which operates in accordance with Good Laboratory Practice principles; however no claim of GLP compliance was intended nor is made for this study
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- ca. 31 - ca. 121 °C
- Atm. press.:
- ca. 100 kPa
- Conclusions:
- Under the study conditions, the melting point range of the test substance was determined to be 31 to 121°C.
- Executive summary:
A study was conducted to determine the melting point of the test substance according to OECD Guideline 102, using differential scanning calorimetry. The melting point range of the test substance was determined to be 31 to 121°C (Envigo, 2019).
Reference
Results
For the thermograms and thermographic data for Determinations 1 and 2, kindly refer the attached background material section of the IUCLID.
Thermographic Data
Thermal Event |
Interpretation |
Temperature (°C) |
|
Determination 1 |
Determination 2 |
||
Endotherm |
Onset of melting |
31.11 |
31.43 |
Endset of melting |
119.81 |
120.67 |
Atmospheric pressure: 100 kPa
Melting temperature: over the range 31 to 121 °C (304 to 395 K)
Discussion
From observing the thermograms, it appeared that the endotherm indicated that the test substance melted over a broad range. To confirm this, the test substance was observed after the main part of the endotherm (70 °C) and at the end of the endotherm (130 °C). After being heated to 70 °C the test substance was a white waxy residue that appeared to have softened. However, after being heated to 130 °C the test substance was a white waxy residue that lay around the periphery of the crucible demonstrating that the test substance had fully liquefied by 130 °C.
The test substance softened gradually over a broad temperature range with apparently 3 or 4 observable phases in the thermograms. This may have been due to not only the test substance being a mixture of components, but also components having different organic functional groups. Therefore, each component or group of components could have their own melting temperature resulting in the test substance not completely melting until 121 °C. This effect resulted in the test substance gradually softening rather than a sudden complete melt over a short temperature range.
Conclusion
The melting point of the test substance has been determined to be over the range 31 to 121 °C (304 to 395 K).
Description of key information
The melting point of the test substance was determined using the differential scanning calorimetry method, according to OECD Guideline 102 (Envigo, 2019).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 31 °C
Additional information
Melting point range: 31 to 121°C
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