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EC number: 700-664-8 | CAS number: 486455-65-6
- 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:
- 10 February 2011
- 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:
- yes (incl. QA statement)
- Type of method:
- capillary method
- Melting / freezing pt.:
- 191.3 °C
- Remarks on result:
- other: ± 0.16 °C (95% confidence interval), in air atmosphere
- Conclusions:
- Using a linear heating rate of 0.5 °C/min, the melting point of the test substance was found to be 191.3 ± 0.16 °C (95% confidence interval), i.e. 464.5 K.
- Executive summary:
The melting point for the test substance was determined in accordance with guidelines OECD 102 and EU Method A.1.
For the determination of the melting point or melting range, the capillary method was used. A small amount of the test item was heated in the electronic controlled sample block and the temperature around the sample was displayed. The sample was observed visually while raising the temperature. The initial and final melting temperatures were determined.
Using a linear heating rate of 0.5°C/min the melting point of the test substance was found to be 191.3 ± 0.16 °C (95 % confidence interval), i.e. 464.5 K.
During the tests the following transformation temperatures were recorded:
- the beginning of melting: 186.9 °C
- the final stage of melting: 191.3 °C
- accuracy: <0.5 °C
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2 April 2001 - 9 April 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- capillary method
- Melting / freezing pt.:
- 183.5 °C
- Remarks on result:
- other: The melting point of the test material was determined to be: 183.5 °C ± 0.9 °C (standard deviation) at atmospheric pressure.
- Conclusions:
- In conclusion, the melting point of the test material was determined to be 183.5 °C ± 0.9 °C.
- Executive summary:
In a melting point determination study (793618), the melting point of the test material was determined to be 183.5 °C ± 0.9 °C, according to EU test method A.1.
Referenceopen allclose all
Using a linear heating rate of 0.5 °C/min, the melting point of the test substance was found to be 191.3 ± 0.16 °C (95% confidence interval), i.e. 464.5 K. The details are summarised in Table 2.
During the tests the following transformation temperatures were recorded:
Temp. 1.: beginning of melting.
Temp. 2.: the shrunken sample begins to collapse downwards and liquefies
Temp. 3. final stage of melting (no solid particles)
Table 2. Measured temperatures corresponding to the melting of the test material (three experiments (I, II, III) with three parallel samples each (1, 2, 3)
|
Measured Temperatures during the Main Study (°C) |
|||||||||
|
I / 1 |
I / 2 |
I /3 |
II / 1 |
II / 2 |
II / 3 |
III / 1 |
III / 2 |
III / 3 |
Mean |
Temp. 1 |
186.8 |
186.8 |
186.8 |
186.9 |
186.9 |
186.9 |
187.1 |
187.1 |
187.1 |
186.9 |
Temp 2 |
189.3 |
189.9 |
189.3 |
188.8 |
189.5 |
189.0 |
189.4 |
189.4 |
189.4 |
189.3 |
Temp 3. Melting Point |
191.1 |
191.3 |
191.3 |
191.1 |
191.6 |
191.1 |
191.6 |
191.5 |
191.4 |
191.3 ± 0.16 |
Atmospheric pressure reading not specifically stated in study report.
In the preliminary DSC test, an endothermic heat effect, the melting, was observed at about 177 °C. After the experiment, the sample had lost about 94 % of its mass and the colour of the sample was changed to black.
In order to determine the melting point more precisely, further tests were performed using the capillary tester. A total of 4 samples were heated with a heating rate of 1 K/min. All samples were completely melted between 182.9 °C and 184.0 °C. After the measurement the samples were clear, yellowish melted.
Description of key information
Two melting point studies have been conducted by capillary methods; both were conducted to GLP using recognised test methods.
One gave a result of 183.5 °C ± 0.9 °C, and the other a result of 191.3 ± 0.16 °C (95% confidence interval), i.e. 464.5 K.
As the result of 191.3 ± 0.16 °C comes from a more recently conducted study, this is selected as the key result.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 191 °C
Additional information
Key Study
The melting point for the test substance was determined in accordance with guidelines OECD 102 and EU Method A.1.
For the determination of the melting point or melting range, the capillary method was used. A small amount of the test item was heated in the electronic controlled sample block and the temperature around the sample was displayed. The sample was observed visually while raising the temperature. The initial and final melting temperatures were determined.
Using a linear heating rate of 0.5°C/min the melting point of the test substance was found to be 191.3 ± 0.16 °C (95 % confidence interval), i.e. 464.5 K.
During the tests the following transformation temperatures were recorded:
- the beginning of melting: 186.9 °C
- the final stage of melting: 191.3 °C
- accuracy: <0.5 °C
Supporting Study
In a melting point determination study (793618), the melting point of the test material was determined to be 183.5 °C ± 0.9 °C, according to EU test method A.1.
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