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EC number: 276-127-2 | CAS number: 71873-51-3
- 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:
- From January 22nd to February 09th, 2018
- 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:
- Adopted on 27 July 1995
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Remarks:
- and capillary method
- Decomposition:
- yes
- Decomp. temp.:
- ca. 350 - 380 °C
- Conclusions:
- Decomposition before melting/boiling at ca. 350 - 380 °C
- Executive summary:
The thermal behaviour of the substance was investigated in accordance with the OECD guideline 102. For the differential scanning calorimetry experiment, the test item was weighed and placed into the crucible and the test was run with a closed crucible. The prepared capsule was inserted into the DSC apparatus and heated from room temperature up to 500 °C at a constant heating rate of 10 K/min. Before and after the test, the weight of the sample was determined. The measurements were performed under inert atmosphere. The experiment was performed in duplicate.
In order to confirm the DSC outcomes, an additional measurement with capillary method was performed in the temperature range of ca. 25 – 250 °C. The experiment was carried out in duplicates.
During the heating up phase, endothermic signal was recorded in the temperature range of approx. 37 – 100 °C that can be associated with the water loss.
Then, an exothermic reaction occurred between ca. 350 and 380 °C, which was associated to decomposition of the substance (energy release of ca. -150 J/g).
At the start of the experiment, the substance appeared as a yellow brown powder; at the end of the experiment the substance appeared as dark brown powder.
Conclusion
The test item undergoes decomposition starting from approximately 350 °C up to 380 °C. No reactions of melting/boiling reaction attributable to the test item were recorded.
Reference
DSC analysis
During the heating up phase, endothermic signal was recorded in the temperature range of approx. 37 – 100 °C that can be associated with the water loss. Then, an exothermic reaction occurred between ca. 350 and 380 °C, which was associated to decomposition of the substance (energy release of ca. -150 J/g).
Reaction | Test item energy (J/g) | Onset Temperature (°C) | Mean Onset Temperature (°C) | RSD (%) | Peak (°C) | Endset Temperature (°C) |
Endothermic (replication 1) | 188.08 | 36.72 | 36.77 | 0.16 | 63.60 | 102.40 |
Endothermic (replication 2) | 124.00 | 36.81 | 64.26 | 96.03 | ||
Exothermic (replication 1) | -156.58 | 354.76 | 355.35 | 0.23 | 363.23 | 381.88 |
Exothermic (replication 2) | -149.68 | 355.94 | 365.41 | 383.14 |
Based on the results of the DSC curves, it is concluded the test item undergoes decomposition starting from approximately 350 °C up to 380 °C. No reactions of melting/boiling reaction attributable to the test item were recorded.
At the start of the experiment, the substance appeared as a yellow brown powder; at the end of the experiment the substance appeared as dark brown powder.
Appearance of the test item
Replication No. | Appearance of the Test Item at the start | Initial Weight of the Test Item, (mg) | Residue (mg (%)) | Appearance of the Test Item at the end |
R1 | Yellow brown granules | 2.1 | 0.4 (19 %) | dark brown powder |
R2 | Yellow brown granules | 2.1 | 0.4 (19 %) | dark brown powder |
Capillary test
Test item did not melt up to 250 °C and no visual change was observed.
Description of key information
Exothermic decomposition before melting/boiling at ca. 350 - 380 °C with an energy release of ca. 150 J/g.
Key value for chemical safety assessment
Additional information
OECD 102 - differential scanning calorimetry
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