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Diss Factsheets
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EC number: 947-313-7 | 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
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:
- 03 - 15 January 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- The study was conducted according to an internationally recognised method, and under GLP. The substance is considered to be adequately characterised. Therefore full validation applies.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2008
- Deviations:
- no
- Principles of method if other than guideline:
- Not applicable
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- inspected on 15 and 16 November 2017 / signed on 15 May 2018
- Type of method:
- differential scanning calorimetry
- Melting / freezing pt.:
- < 5 °C
- Atm. press.:
- ca. 1 013 hPa
- Conclusions:
- The melting point of test substance was determined to be below 5.0°C.
- Executive summary:
The melting range of the test substance was determined under GLP according to EU Method A.1 and OECD 102, using the DSC method.
A pre-test was conducted, showing that the substance was a slightly brown flowable liquid at room temperature and atmospheric pressure. At 5.0°, the test item was more solid compare to room temperature, but still pierceable (viscous mass). At -20.9°C and -80°C, the test item was solid.
Third determinations were conducted by DSC including a replicate. In the cooling down phase no event could be detected, therefore the DSC measurements did not show any detectable freezing. In the heating up phase two flat and wide endothermic events were detected. The first event was observed in a range of -52.00 to -19.88 °C and the second in a range of -19.98 to 17.08 °C (evaluated with the event marker function). However, considering the complex nature of the test item and as no signs of freezing were observed during the cooling down phase, these events cannot clearly be identified. These events might indicate a delay of melting or some kinds of transition.
Finally, considering that in the pre-test, the test item was not frozen after a storage time of 24 hours at 5.0°C whereas it was frozen at -20.9 °C, the melting point of the test item was stated as below 5.0°C (278.2 K) under these circumstances.
Reference
Results of the pre-test :
At room temperature, the test item was a slightly brown flowable liquid. At 5.0°, the test item was more solid compare to room temperature, but still pierceable (viscous mass). At -20.9°C and -80°C, the test item was solid.
Results of the Main test using DSC method:
In all runs the mass of the crucibles was the same and the crucible was visually unchanged.
In the cooling down phase no event could be detected, therefore the DSC measurements did not show any detectable freezing.
In the heating up phase two flat and wide events were detected. These events are endothermic. The detected events cannot clearly be identified.
The first event was observed in a range of -52.00 to -19.88 °C and the second in a range of -19.98 to 17.08 °C (evaluated with the event marker function).
These events might indicate a delay of melting. As the test item is a UVCB substance it is not unusual to have flat and wide peaks and even more as one peak. But it can be some kinds of transition as well.
As no freezing was observed during the cooling down phase, the events in the heating up phase cannot be considered as melting without ambiguity.
Therefore, the melting point of the test item has been stated based on the preliminary results, as below 5.0°C (278.2 K) under these circumstances.
No observations were made which might cause doubts on the validity of the study outcome.
Description of key information
The melting range of the test item was considered to be < 5.0°C (278.2K)
Key value for chemical safety assessment
Additional information
A fully reliable GLP experimental study, conducted according to a recognized OECD/EC guidelines is available.
It is considered as a key study.
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.