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EC number: 291-443-0 | CAS number: 90411-66-8
- 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:
- 9 Jan 2018 - 16 Feb 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 27 July 1995
- Deviations:
- no
- GLP compliance:
- no
- Other quality assurance:
- other: ISO 9001: 2015
- Type of method:
- differential scanning calorimetry
- Melting / freezing pt.:
- -35.4 °C
- Atm. press.:
- >= 1 016 - <= 1 020 hPa
- Conclusions:
- The melting / freezing point of the test substance was found to be -35.4°C at 1013 hPa, under the conditions of the test.
- Executive summary:
In this guideline (OECD 102) study, the melting point of the test substance (EC 291-443-0) was found to be -35.4 °C at 1018 ± 2hPa.
Reference
Preliminary Test
The TGA curve of the test item is shown in Figure 1. Starting at 300°C, the weight of the sample decreased significantly. At 357°C, the sample weight had decreased by 25%.
After the experiment it was observed that the test item was evaporated from the sample container.
Main Study
The DSC curve obtained with Experiment 1 is shown in Figure 2. During cooling, exothermic effects were observed between -10°C and -80°C (results are archived in the raw data). The effects was obtained due to crystallization of the test item. During heating two endothermic peaks were observed between -90°C and 25°C followed by a broad endothermic effect between 200°C and 375°C. The peak max temperature of the first peak was -35.149°C and -4.933°C for the second peak. The endothermic effects were obtained due to melting of the test item. The extrapolated onset temperature of the third peak was 340.434°C. The third 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.
In order to investigate the boiling peak, a higher heating rate of 50°C/minute was used during heating from 25°C in the Experiment 2. Figure 3 shows the DSC curve obtained. The peak max temperature of the first peak was -35.577 and 5.228°C for the second peak. Theextrapolated onset temperature of the third peak was 358.128°C. The third endothermic peak 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.
Experiment 3 was performed as a duplicate of Experiment 1 (without the cooling cycle). Figure 4shows the DSC curve obtained. Similar results as in Experiment 1 were obtained. The extrapolated onset of theboilingpeak was 354.555°C. The difference in the extrapolated onset between Experiment 1 and 3 was > 1°C. After the experiment it was observed that the test item had evaporated from the sample container.
Experiment 4 was performed as a duplicate of Experiment 3. Heating rate was the same as in Experiment 1 and Experiment 3. Figure 5 shows the DSC-curve obtained. The extrapolated onset of the boiling peak was 354.674°C. Afterthe experiment it was observed that the test item had evaporated from the sample container.
The melting temperature was determined as a melting range obtained from the average peak maximum of the first melting temperature (-35.4°C) and the average peak maximum of the last melting temperature (-5.081°C).
The boiling temperature was
determined as the mean boiling temperature of Experiment 1 (354.555°C)
and Experiment 2 (354.674°C).
Description of key information
Study conducted to recognised testing guidelines.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -35.4 °C
Additional information
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