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Diss Factsheets
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EC number: 629-080-0 | CAS number: 161308-34-5
- 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:
- 15 April 2019 - 08 May 2019
- 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:
- 2016
- 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 (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 294.4 °C
- Decomposition:
- yes
- Decomp. temp.:
- 325 °C
- Conclusions:
- The melting temperature of the substance was determined to be 294.4°C.
- Executive summary:
Differential Scanning Calorimetry was performed. The experiments were based on EC A.1, OECD 102 and OPPTS 830.7200 (melting temperature) and on EC A.2, OECD TG 103 and OPPTS 830.722 (boiling temperature). The DSC curve showed an endothermic effect due to melting. The melting temperature of the substance was determined in duplicate obtaining a mean value of 294.4°C. Boiling of the substance was not observed below the temperature at which reaction and/or decomposition started (i.e. at 325°C).
Reference
TGA EXPERIMENT (PRELIMINARY TEST)
Decrease of weight from 350°C upwards: 25% at 371°C and 70% at 395°C.
After the experiment, a black molten residue remained in the sample container (original colour: white). The change of the colour indicated reaction and/or decomposition of the test item.
DSC EXPERIMENT 1
An endothermic effect was observed between 250°C and 275°C followed by an endothermic effect between 275°C and 300°C and an endothermic effect starting at 325°C. The reason for the first endothermic peak was unknown. The extrapolated onset temperature of the second effect was 294.520°C. The second endothermic effect was most likely obtained due to melting of the test item. The third endothermic effect was due to reaction and/or decomposition of the test item. After the experiment, a brown molten residue remained in the sample container.
DSC EXPERIMENT 2
In order to investigate melting of the test item, Experiment 2 was stopped directly after the first endothermic effect. After the experiment, the sample appeared to have been unchanged, i.e. no melting and/or decomposition were observed.
DSC EXPERIMENT 3
In order to investigate melting of the test item, Experiment 3 was stopped directly after the second endothermic effect. The extrapolated onset temperature of the second endothermic effect was 294.310°C. After the experiment, a white molten residue remained in the sample container. It demonstrated that melting was the reason for the second endothermic effect.
DSC curve: see Illustration below.
RESULT
Melting temperature: mean extrapolated onset temperature of Experiment 1 (294.520°C) and Experiment 3 (294.310°C).
Description of key information
Melting point: 294.4°C (EC A.1, OECD 102, OPPTS 830.7200: DSC)
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 294.4 °C
Additional information
Reaction and/or decomposition at > 325°C
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