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Diss Factsheets
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EC number: 457-900-5 | 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
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Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 15 May - 14 Jun 2007
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP - Guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Food and Consumer Product Safety Authority, Den Haag, The Netherlands
- Type of method:
- thermal analysis
- Remarks:
- differential scanning calorimetry
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Name of test material (as cited in study report): PM-5927
- Physical state:off-white powder
- Lot/batch No.:07-02
- Expiration date of the lot/batch:05.02.2008
- Storage condition of test material: at room temperature protected from light
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- 144 °C
- Atm. press.:
- ca. 1 013 hPa
- Decomposition:
- yes
- Remarks on result:
- other: decomposition temperature not reported
Any other information on results incl. tables
The melting temperature is defined as the temperature at which the phase transition from solid to liquid state takes place at normal atmospheric pressure. This temperature ideally corresponds to the solidification or freezing temperature.
The melting temperature or boiling temperature (if any) of a pure substance is evaluated from a DSC-curve as the extrapolated onset temperature of the endothermic melting or evaporation peak, i.e. as the cross point of the extrapolated base line and the linear part of the rising section of the melting or evaporation peak.
Melting, boiling and/or other relevant decomposition temperatures are given in degrees Celsius (°C) and Kelvin (K). Temperature in Kelvin = Temperature in °C + 273.15.
Preliminary testTGA-curve shows that was recorded during the preliminary test. From approximately 140 °C until 225 °C, a small weight change was observed which was probably caused by evaporation of a small fraction (approximately 2%) of the test substance. From approximately 225 °C upwards the weight of the sample decreased significantly. At 338 °C, the sample weight had decreased by 25%. After the experiment, a black coloured (original colour: off-white), swollen, brittle residue remained in the sample container. The change of the colour indicates reaction and/or decomposition of the test substance.
Main study
The DSC-curve shows that was recorded during the first experiment (25 °C – 338 °C). An endothermic peak was observed between 125 °C and 175 °C. This effect was probably caused by melting of the test substance. The extrapolated onset temperature of this peak was 144 °C. Several endothermic and exothermic effects were observed at temperatures > 215 °C, which were probably due to reaction and/or decomposition of the test substance. After the experiment, a dark red coloured molten residue remained in the sample container (original colour: off-white). The change of colour indicated that the test substance had reacted and/or decomposed.
DSC-curves that were recorded during the second experiment (25 °C – 200 °C; cooling not reported in detail). The extrapolated onset temperature of the endothermic peak obtained with the first heating was 143 °C. During the second heating, the endothermic peak was shifted significantly to lower temperatures. After the experiment, a yellow molten residue remained in the sample container (original colour: off-white). The change of colour and the shift of the endothermic peak indicated that the test substance possibly had reacted and/or decomposed during melting.
The DSC-curves that were recorded during the third experiment (25 °C – 165 °C; cooling not reported in detail). Essentially the same results as during the second experiment were obtained. To demonstrate that the endothermic peak was due to melting of the test substance the fourth experiment (25 °C – 180 °C) was performed with a rate of 5 °C/minute. The endothermic peak was observed between 110 °C and 175°C. The extrapolated onset temperature of this peak was 142 °C. After the experiment, a yellow molten residue remained in the sample container (original colour: off-white). Since a similar temperature was observed at which the endothermic effect occurred it can be concluded that the observed effect was due to melting of the test substance.
The melting temperature of the test substance was determined using the extrapolated onset temperatures obtained with experiments 1 - 3 since all experiments were performed using a heating rate of 20 °C/minute. The mean melting temperature of the test substance is 144 °C.
Reaction and/or decomposition of the test substance was observed during melting. Boiling of test substance was not observed below the temperature at which reaction and/or decomposition started Therefore, the test substance has no boiling temperature.
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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