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Diss Factsheets
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EC number: 201-172-1 | CAS number: 79-05-0
- 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:
- 2018-11-20 to 2019-01-17
- 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:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- > 80 - < 82 °C
- Atm. press.:
- 1 013.25 hPa
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The melting range of the test item was determined to be in range from 80 to 82 °C.
- Executive summary:
A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1 and EPA OCSPP test guideline 830.7200 to determine the melting point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen). Two tests with about 14 – 16 mg of the test item were performed. As reference crucible, an empty aluminium crucible was used. Under ambient conditions, the test item is solid. Therefore, the tests were started at ambient temperature. During the heating phase a distinct endothermic effect was observed in the temperature range of 70 – 100 °C, which was assigned to the melting of the test item. As the onset temperatures from both test runs deviate by more than 0.5 K from their mean value of 81.10 °C, a melting range of 80 – 82 °C was given instead of a melting point. For verification of the result for the melting temperature the test item was additionally tested according to the capillary method. The test item was homogenised prior to the test by pounding with a mortar and pestle. In the three tests, the test item melted at an average temperature of 81.0 °C. Thus, the melting range of the test item was determined to be in range from 80 to 82 °C.
Reference
Results of the DSC-measurements
During the heating phase a distinct endothermic effect was observed in the temperature range of 70 – 100 °C, which was assigned to the melting of the test item.
Results of the DSC measurements
Sample |
Onset of |
Range of effect /°C |
Weight |
Atmospheric |
14.53 |
80.17 |
70- 100 (endo) |
14.53 |
1007.9 |
15.77 |
82.03 |
70- 100 (endo) |
15.77 |
990.8 |
Capillary Method
For verification of the result for the melting temperature the test item was additionally tested according to the capillary method. The test item was homogenised prior to the test by pounding with a mortar and pestle. In the three tests, the test item melted at an average temperature of 81.0 °C.
As the onset temperatures from both test runs deviate by more than 0.5 K from their mean value of 81.10 °C, a melting range of 80 – 82 °C was given instead of a melting point.
Description of key information
The melting range of the test item was determined to be in range from 80 to 82 °C (reference 4.2-1).
Key value for chemical safety assessment
Additional information
A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1 and EPA OCSPP test guideline 830.7200 to determine the melting point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen). Two tests with about 14 – 16 mg of the test item were performed. As reference crucible, an empty aluminium crucible was used. Under ambient conditions, the test item is solid. Therefore, the tests were started at ambient temperature. During the heating phase a distinct endothermic effect was observed in the temperature range of 70 – 100 °C, which was assigned to the melting of the test item. As the onset temperatures from both test runs deviate by more than 0.5 K from their mean value of 81.10 °C, a melting range of 80 – 82 °C was given instead of a melting point. For verification of the result for the melting temperature the test item was additionally tested according to the capillary method. The test item was homogenised prior to the test by pounding with a mortar and pestle. In the three tests, the test item melted at an average temperature of 81.0 °C. Thus, the melting range of the test item was determined to be in range from 80 to 82 °C.
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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