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Diss Factsheets
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EC number: 262-911-1 | CAS number: 61698-32-6
- 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
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From 01 September 2021 to 10 March 2022
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point/Boiling Range)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Actual storage conditions: Stored in original plastic bag in a ventilated closed cupboard at normal laboratory temperature.
- Decomposition:
- yes
- Decomp. temp.:
- 180 °C
- Remarks on result:
- other: based on DSC-TG curves drop, under inert atmosphere
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- 120 °C
- Remarks on result:
- other: based on colour change, in air atmosphere
- Executive summary:
The boiling point of the test item was determined according to OECD 103 / EU A2 guidelines, using differential scanning calorimetry (DSC) method, and under GLP.
In the DSC pre-tests (under nitrogen atmosphere) no peak assigned to the melting or boiling of the substance was clearly observed up to 550°C. The aspect at the end of measurement showed degradation before 280°C, and partial mass loss started from ca 180°C. Additional test in the muffle furnace (in air atmosphere) showed visual colour change starting from 120°C, therefore oxidative degradation is suspected.
The boiling temperature of the test item is not determinable, due to decomposition before melting transition.
Reference
First Pre-test
No peak assigned to the melting and/or boiling of the substance was clearly observed. Therefore, measurement was stopped at 550°C.
A peak was observed from 218.3°C with a corresponding mass loss of 13.46 %.
Mass continues decreasing after the peak and perturbations on the DSC signal are observed. Considering the aspects of the crucible and substance at the end of measurement, the substance decomposed during the test and spilled out of the crucible.
Oxidative degradation is discarded as the measurement was performed under inert atmosphere (nitrogen). As the peak observed at 218.3°C is endothermic, a possible melting could occur before degradation of the test item. To verify this hypothesis, a new pre-test was performed.
Second Pre-test
The DSC signal looks similar with the first pre-test. The onset of the endothermic peak is observed from 214.3°C (start of both TG and DSC curves drop around 180°C) and a comparable mass-loss (-12.60%) is observed.
However, by looking at the test item appearance after cooling of the crucible, degradation already occurred even if the substance seems to have melted at the same time.
Muffle Furnace Observation
A first test was performed. By heating up to 200°C in the muffle furnace, the test item is already degraded and started to melt.
The endothermic peak observed from 214.3°C (onset temperature) during the second pre-test could eventually correspond with the melting of the test item but degradation occurs before.
Another test using the muffle furnace was performed. The test item was observed at least every 10°C up to 200°C.
Relevant observations are summarised below (pictures are available in the experimental report):
Temperature | Description |
20°C to 110°C | The test item remains light-pink/white. |
120°C | The test item starts to turn slightly pink-red (probably oxidative degradation). |
130-140°C | The colouring becomes more and more pronounced. |
150°C | The test item colour is now orange. |
160°C | The test item becomes darker and start to « crack ». |
170°C | The test item colour turns red. |
180-185-190°C | The test item colour continues to darken. |
200°C | The test item is completely black and seems to start melting (little « spheres » appear). |
Based on the appearance of the substance during heating and combining this information with the results obtained from the TG-DSC thermograms, it appears that the test item degrades before melting. From the second pre-test results, the test item mass starts decreasing from 180°C and the DSC curve increases from the same temperature due to the degradation of the test item. An oxidative degradation is suspected to occur earlier from 120°C based on the test item colour change.
Considering the degradation of the test item, boiling point is “not determinable”.
Description of key information
Not determinable: decomposition before boiling (and melting), starting from 120°C in air atmosphere. (OECD 103, DSC, GLP; Noel Y., 2022)
Key value for chemical safety assessment
- Temperature of decomposition (state purity):
- 120 °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.
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