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EC number: 243-818-5 | CAS number: 20429-33-8
- 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:
- From June 12, 2017 to September 20, 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- 1998
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- >= 9 - <= 29.4 °C
- Decomposition:
- yes
- Decomp. temp.:
- > 50 °C
- Conclusions:
- Under the study conditions, from duplicate experiments, the melting range was established between 9.0°C and 29.4°C. Reaction and/or decomposition of the substance occurs at temperatures above 50°C.
- Executive summary:
A study was conducted to determine the melting point of the test substance according to OECD 102 Guideline, EU Method A.1 and OPPTS 830.7200. A melting range instead of a well defined melting temperature was determined. Under the study conditions, from duplicate experiments, the melting range was established between 9.0°C and 29.4°C. Reaction and/or decomposition of the substance occurs at temperatures above 50°C (Reingruber, 2017).
Reference
TGA EXPERIMENT (PRELIMINARY TEST)
Starting at 100°C, the weight of the sample decreased significantly: 25% weight loss at 316°C and 70% weight loss at 440°C.
After the experiment, a dark brown molten residue remained in the sample container. The change of the colour indicated reaction and/or decomposition of the test substance.
DSC EXPERIMENT 1
During cooling two exothermic peaks were observed between 25°C and -25°C, most probably due to crystallisation of the test substance. During heating three endothermic peaks were observed between -25°C and 50°C directly followed by a broad endothermic effect starting at 50°C. The peak max temperature of the first peak was 9.329°C and of the last peak was 29.370°C. The endothermic effects were most likely obtained due to melting of the test substance. After the experiment, a light yellow molten residue remained in the sample container.
DSC EXPERIMENT 2
In order to investigate whether reaction and/or decomposition of the test substance did already occur during melting, Experiment 2 was stopped at 50°C. Again, endothermic peaks were observed between -25°C and 50°C. The peak max temperature of the first peak was 8.979°C and of the last peak was 19.627°C. After the experiment, an off-white molten residue remained in the sample container. It demonstrated that melting was the reason for the endothermic effect and that reaction and/or decomposition of the test substance did not occur at temperatures up to 50°C.
DATA HANDLING
The melting temperature was determined as a melting range obtained from the lowest peak max of the first melting temperature (9.0°C) and the highest peak max of the last melting temperature (29.4°C).
Description of key information
The melting point was determined according to OECD Guideline 102, EU Method A.1 and OPPTS 830.7200 (Reingruber, 2017).
Key value for chemical safety assessment
Additional information
The melting range: 9.0°C - 29.4°C. Reaction and/or decomposition: >50°C.
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