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EC number: 248-053-0 | CAS number: 26850-47-5
- 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:
- August 05, 2016 - August 30, 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- > 90 °C
- Atm. press.:
- ca. 1 010 mBar
- Decomposition:
- yes
- Decomp. temp.:
- > 150 °C
- Conclusions:
- The test item started to melt at 90 °C followed by decomposition.
- Executive summary:
The melting point / melting range of the test substance was determined via Differential Scanning Calorimetry (DSC) and capillary tube in a metal block according to OECD 102.
For DSC, 12.61 mg and 10.03 mg of the test substance were heated constantly until the final temperature (450°C) is reached, while measuring the quantity of heat absorbed or released. The substance melted from 90°C to 150°C and was observed to be black after measurement.
For the capillary tube method, the test item was filled to a height of approx. 5 mm into the test tube and heated to the maximum temperature (410°C), while any changes of the substance are observed and recorded. The substance started to melt from 104°C. At 123°C the substance was completely melted and turned black.
According to these results the substance starts to melt at 90°C followed by decomposition.
Reference
Individual results
Melting point / melting range: DSC measurement
Two DSC measurements in aluminium crucibles with a hole showed a multistage endothermal effect in the temperature range of 90 – 150 °C with no clear melting point (onset). Afterwards exothermal decomposition started.
The results of the DSC measurements are summarized in Table 1.
Table 1: Melting point (DSC measurements)
Ident No. |
Test item / mg |
Starting temperature / °C |
Final test temperature / °C |
Temperature range (melting) / °C |
Onset / °C |
Crucible |
Observations after the measurement |
35739 |
12.61 |
25 |
450 |
90 –150 |
Multi-stage |
Aluminium with a hole |
Test item was black after the measurement |
35817 |
10.03 |
25 |
400 |
90 – 145 |
Multi-stage |
Aluminium with a hole |
Test item was black after the measurement |
An additional measurement with the capillary method was performed in order to clarify the melting range.
Melting point / melting range: capillary tube in a metal block
A measurement with the capillary method was performed to clarify the results of the DSC measurements. Since this measurement was performed only as a verifying screening a high heating rate of 10 K/min was chosen and therefore the absolute temperature values derived with the capillary method are not as accurate as the DSC results. The filling height of the test item was approximately 5 mm.
The results are summarized in Table 2.
Table 2: Results of the capillary method
No. |
Set point / |
Heating rate / K/min |
End |
Remarks |
1 |
60 |
10 |
200 |
Approx. 60°C: sample appeared unchanged. Approx. 104 °C: sample started to melt. Approx. 123 °C: sample completely melted and discoloured to black. Approx. 145 °C: formation of bubbles started. Approx. 180 °C: formation of bubbles deceased. Approx. 200 °C: no further change observed. |
The capillary method measurement showed that the test item melted within a wide temperature range followed by decomposition.
Under consideration of the results from the thermal stability (ambiguous onset), the DSC measurements and the capillary method it was concluded that the test item started to melt at 90 °C followed by decomposition.
Description of key information
The melting point / melting range of the test substance was determined via Differential Scanning Calorimetry (DSC) and capillary tube in a metal block according to OECD 102.
The test substance started melting at 90°C, followed by decomposition.
Key value for chemical safety assessment
Additional information
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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