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EC number: 850-366-8 | CAS number: 98969-19-8
- 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:
- 18-03-2020 to 13-05-2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- Guideline study performed under GLP. All relevant validity criteria were met.
- 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
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- <= -83.7 °C
- Atm. press.:
- ca. 1 024 hPa
- Decomposition:
- no
- Sublimation:
- no
- Remarks on result:
- other: mean melting point (n = 2)
- Conclusions:
- The melting temperature of the test item has been determined to be < -83.7 °C (or < 189..5 K). At above this temperature the substance is considered to be liquid.
- Executive summary:
The melting temperature was determined using OECD TG 102 and EU Method A.1 with the Differential Scanning Calorimetry method under GLP. The guideline defines the melting temperature as: the temperature at which the phase transition from solid to liquid state occurs at atmospheric pressure and this temperature ideally corresponds to the freezing temperature. During cooling, no exothermic effect was observed that were obtained due to crystallization. During heating (+20°C/minute) an endothermic effect was observed between 175°C and 300°C. The extrapolated onset temperature of the effect was 244.303°C. The endothermic effect was most likely obtained due to boiling of the test item. Further DSC runs were performed to evaluate boiling point. An additional investigation of the melting temperature of the test item was performed placing two subsamples of the test item for 19 hours at -20.5 ± 1.9°C and at -83.7 ± 1.7°C,respectively. It was observed after storage that the test item was a liquid (-20.5 ± 1.9°C) and a very viscous liquid (-83.7 ± 1.7°C). It was observed that the test item was a liquid to less than -20.0°C in duplicate. It was concluded that the melting temperature of the test item was < -83.7°C (< 189.5K). At above this temperature the substance is considered to be liquid.
Reference
- Experiment 1: During cooling, no thermal effects were found. During heating (+20°C/minute) an endothermic effect was observed between 175°C and 300°C. The extrapolated onset temperature of the effect was 244.303°C. The endothermic effect was most likely obtained due to boiling of the test item.
After the experiment it was observed that the test item had evaporated from the sample container.
- Experiment 2: Was conducted to examine further the endothermic effect, a higher heating rate of 50°C/minute was used in the Experiment 2. The extrapolated onset temperature was 291.987°C. The endothermic effect had not shifted significantly to higher temperatures. It demonstrated that boiling of the test item caused the endothermic effect. After the experiment it was observed that the test item had evaporated from the sample container. Since a higher heating rate (+50°C/minute) was used, the extrapolated onset temperature was not used in the calculation of the boiling point.
- Experiment 3: Was conducted to further examine the melting and boiling temperature of the test item. Similar results as in Experiment 1 were obtained. The extrapolated onset of the boiling effect was 289.235°C. The difference in the extrapolated onset between Experiment 1 and Experiment 3 was > 1°C. After the experiment it was observed that the test item had evaporated from the sample container. The observed boiling temperature in Experiment 3 was 289.235°C which was in agreement with results observed in experiment 2. The test item might have been evaporated during the heating cycle, causing the lower boiling peak. Therefore, another experiment was performed to further investigate the boiling point, with the same conditions as experiment 3 without cooling.
- Experiment 4: Was conducted to further examine the boiling temperature of the test item. The heating rate (+20°C/minute) was the same as in Experiment 1 and Experiment 3. The extrapolated onset of the boiling peak was 279.801°C. The difference in the extrapolated onset between Experiment 3 and 4 was > 1°C. After the experiment it was observed that the test item had evaporated from the sample container.
- Experiment 5: Was conducted to further examine the extrapolated onset temperature and/or the boiling temperature of the test item. a larger sample mass of test item was used in Experiment 5, with a similar heating rate (+20°C/minute). The extrapolated onset of the boiling peak was 289.227°C. After the experiment it was observed that the test item had evaporated from the sample container. The boiling temperature was determined as the mean boiling temperature of Experiment 3 (289.235°C) and Experiment 5 (289.277°C).
- Other investigations:
An additional investigation of the melting temperature of the test item was performed placing two subsamples of the test item for 19 hours at -20.5 ± 1.9°C and at -83.7 ± 1.7°C,respectively. It was observed after storage that the test item was a liquid (-20.5 ± 1.9°C) and a very viscous liquid (-83.7 ± 1.7°C). It was observed that the test item was a liquid to less than -20.0°C in duplicate. It was concluded that the melting temperature of the test item was < -83.7°C (< 189.5K).
The melting temperature was determined as < -83.7°C (or <189.5K).
The boiling temperature was determined as the mean boiling temperature of Experiment 3 (289.235°C) and Experiment 5 (289.277°C). Mean (n=2) : 289.3°C at 1024 ± 5 hPa atmospheric pressure.
Description of key information
Mp: < -83.7 °C (or < 189.5 K) at 1 atmosphere, OECD TG 102 : DSC Method, 2020
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -83.7 °C
Additional information
Key Study : OECD TG 102, 2020 : The melting temperature was determined using OECD TG 102 and EU Method A.1 with the Differential Scanning Calorimetry method under GLP. The guideline defines the melting temperature as: the temperature at which the phase transition from solid to liquid state occurs at atmospheric pressure and this temperature ideally corresponds to the freezing temperature. During cooling, no exothermic effect was observed that were obtained due to crystallization. During heating (+20°C/minute) an endothermic effect was observed between 175°C and 300°C. The extrapolated onset temperature of the effect was 244.303°C. The endothermic effect was most likely obtained due to boiling of the test item. Further DSC runs were performed to evaluate boiling point. An additional investigation of the melting temperature of the test item was performed placing two subsamples of the test item for 19 hours at -20.5 ± 1.9°C and at -83.7 ± 1.7°C,respectively. It was observed after storage that the test item was a liquid (-20.5 ± 1.9°C) and a very viscous liquid (-83.7 ± 1.7°C). It was observed that the test item was a liquid to less than -20.0°C in duplicate. It was concluded that the melting temperature of the test item was < -83.7°C (< 189.5K). At above this temperature the substance is considered to be liquid.
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