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EC number: 947-724-1 | 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:
- 7-17 May 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.:
- < 4.9 °C
- Atm. press.:
- ca. 1 013 hPa
- Remarks on result:
- other:
- Remarks:
- Atmospheric pressure not specified, but assumed to be ambient. Potential delay of melting till approximately 18°C.
- Conclusions:
- The melting point of test substance was determined to be below 4.9°C, with potential delay of melting till approximately 18°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. Two pre-tests were also conducted to interpret the results obtained with the DSC method.
Two DSC determinations and a replicate were conducted:
In the cooling down phase no event could be detected from 20 to -45°C. Therefore no signs of freezing of the test item could be detected.
In the heating up phase two flat and broad endothermic events were detected from -45°C to 95°C.
The first event was in a range of -29.92 °C to 4.39 °C (243.23 K – 277.54 K).
In the pre-test 1, the test item was not frozen after a storage time of 48 hours at 4.9°C whereas it was frozen at -21.1 °C.
Therefore, this event may be assigned to the melting of the test item.
The second endothermic event was in a range of 3.56 °C to 18.17 °C (276.71 K – 291.32 K).
This event might indicate a delay of meltingor a kind of transition leading to a form different from the original test item at room temperature.
As no freezing was observed during the cooling down phase, the events observed in the heating up phase of the DSC measurements were difficult to interpret without ambiguity.
For that reason,the freezing and / or melting point ofthe test item has been stated as below 4.9°C (278.1 K) with potential delay of melting till approximately 18°C under these circumstances.
Note that in the pre-test 2, a transition leading to a more flowable form of the substance was detected between 48 and 73°C.
Reference
Results of the pre-test 1:
At room temperature, the test item was a green-brown very viscous, very sticky mass. At 4.9°C, the test item was more solid rarely piercable, but still pierceable (viscous mass). At -21.1°C and -80°C, the test item was solid like ice.
Results of the pre-test 2:
From 48°C the little thin wire began to sink in the surface, i.e. the beginning of a transition leading to a more flowable form of the substance was detected. At 73°C, the little thin wire was completely sank to the bottom, i.e. the end of a transition leading to a more flowable form of the substance was detected.
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 after the test.
All the values were evaluated with event marker function
In all the DSC measurements, no events were detected in the cooling down phase.
In the heating phase, two flat and broad endothermic peaks were detected.
The first one was in a range of -29.92 °C to 4.39 °C (243.23 K – 277.54 K).
In pre-test 1, we noted that the test item was solid after a storage time of 48 hours at -21.1 °C, whereas it was not frozen after a storage time of 48 hours at 4.9 °C. However, at this temperature, the test item was more solid, rarely pierceable, which may indicate that it is close to the beginning of the freezing.
4.9°C was very close to the ending temperature of the endothermic event observed by DSC. Therefore this event may be assigned to the melting of the test item.
The second endothermic event was in a range of 3.56 °C to 18.17 °C (276.71 K – 291.32 K).
This event might indicate a delay of meltingor a kind of transition leading to a form different from the original test item at room temperature.
Note: that is not unusual to observe flat and broad peaks and even more than one peak in this kind of complex UVCB substances.
As no freezing was observed during the cooling down phase, the events observed in the heating up phase of the DSC measurements were difficult to interpret without ambiguity.
No observations were made which might cause doubts on the validity of the study outcome. Therefore, the result of the study is considered valid.
Description of key information
The melting point of the test item was considered to be < 4.9°C (278.1K), with potential delay of melting till approximately 18°C.
Note that the substance is flowable at a temperature of 73°C.
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.
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