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Diss Factsheets
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EC number: 632-619-2 | CAS number: 881685-58-1
- 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:
- 30 May 2012 to 08 Aug 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2008
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- >= 119 - <= 138 °C
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The melting temperature range of the test item was determined to be 119 to 138 °C (392 to 411 K).
- Executive summary:
The melting point of the test substance was determined according to OECD TG 102 following GLP principles. The determinations were carried out by differential scanning calorimetry (DSC) using the procedure specified in ASTM E537-86. Two distinct endotherms were observed on heating the test substance. To allow assignment of these thermal events, a visual assessment was performed using a metal block apparatus. This confirmed that no phase transition was associated with the initial endotherm at approximately 60 to 80 °C. At 79 °C apparent droplets of condensed vapor were observed on the capillary walls, but critically the test substance was observed to remain in a solid physical state up to a temperature of at least 117 °C. The test substance then was visually confirmed to melt completely from 120 to 142 °C.
The overall melting temperature range was determined to be 119 to 138 °C (392 to 411 K).
Reference
Two distinct endotherms were observed on heating the test item. To allow assignment of these thermal events, a visual assessment was performed using a metal block apparatus. This confirmed that no phase transition was associated with the initial endotherm at approximately 60 to 80 °C. At 79 °C apparent droplets of condensed vapor were observed on the capillary walls, but critically the test item was observed to remain in a solid physical state up to a temperature of at least 117 °C. The test item then was visually confirmed to melt completely from 120 to 142 °C.
The cyclic heating test, in which the sample was heated to an intermediate temperature above the first endotherm endset but below the second endotherm onset, then cooled and reheated, also supported that no phase transition was associated with the first endotherm. The endotherm was identified as a non-reversible thermal event, possibly attributable to the loss of a volatile impurity (latent heats of vaporization typically being much greater than latent heats of fusion, significant endotherms can be obtained from minor volatile impurities). No corresponding exotherm was seen during the cooling step or repeat of the first endotherm on reheating the sample over the entire temperature range of the definitive test, consistent with this theory.
A broad endotherm was obtained for the melting of the test item and therefore a melting temperature range has been reported for each determination, derived from the extrapolated onset and endset temperatures. Due to the initial low rate of enthalpy change on melting, the onset temperature showed some variance. Subsequently, the conclusion of the study has been taken as the overall melting range determined, from the lowest onset temperature and the highest endset temperature.
Description of key information
Melting range: 119 to 138 °C (392 to 411 K), OECD TG 102, differential scanning calorimetry (DSC), O’Connor 2012
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 119 °C
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.
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.