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EC number: 275-139-5 | CAS number: 71032-99-0
- 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:
- September from 21st to 22nd, 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: OECD guideline 113 (Screening Test for Thermal Stability and Stability in Air)
- Version / remarks:
- adopted May 12, 1981
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- adopted July 27, 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- The test item was used in its initial form.
- Decomposition:
- yes
- Decomp. temp.:
- ca. 109 °C
- Remarks on result:
- other: endothermic decomposition
- Decomposition:
- yes
- Decomp. temp.:
- ca. 180 °C
- Remarks on result:
- other: exothermic decomposition
- Conclusions:
- Endothermic decomposition starts at 109.20 °C; exothermic decomposition starts before melting at ca. 180 °C.
- Executive summary:
The thermal behaviour of the substance was investigated using the differential scanning calorimetry method, in accordance with the OECD guidelines 102 and 113.
In the first experiment, the prepared capsule was inserted into the furnace of the DSC device and heated from 25 to 500 °C with 10 °C/minutes heating rate. The measurement was performed under nitrogen atmosphere. Before and after the test, the weight and the appearance of the sample were determined. This experiment was performed in duplicate.
A supplementary test was run, in order to clarify the thermal behavior of the substance. The prepared capsule was inserted into the furnace of the DSC device and heated from 25 to 120 °C, 140 °C, 180 °C and 205 °C with 10 °C/minutes heating rate, than cooled down to 25 °C. Before and after the test, the weight and the appearance of the sample were determined.
Based on the results of the DSC curves, exothermic decomposition occurs between ca. 180 and 220 °C; based on results and appearance of test item after the supplementary tests, it is concluded that an endothermic decomposition starts from ca. 109 °C.
Reference
Summary of the DSC test of test item
Experiment 1 | Experiment 2 | Mean | ||
Endotherm peak | Onset of effect [°C] | 109.20 | 109.20 | 109.20 |
Endset of effect [°C] | 117.03 | 117.68 | 117.36 | |
Energy [J/g] | -2.96 | -2.76 | -2.86 | |
Exotherm contiguous peak | Left limit [°C] | 182.40 | 182.15 | 182.28 |
Right limit [°C] | 223.64 | 219.45 | 221.55 | |
Energy [J/g] | 88.17 | 91.58 | 89.88 |
Values of the DSC run in the first experiment
Sample weight [mg] | Total loss of mass (%) | Onset of effect [°C] | Endset of effect [°C] | Left limit [°C] | Right limit [°C] | Energy [J/g] |
2.50 | 63.2 | 109.20 | 117.03 | 106.27 | 119.88 | 2.96 (endothermic) |
212.39 | 223.61 | 182.40 | 223.64 | -88.17 (exothermic) |
Values of the DSC run in the second experiment
Sample weight [mg] | Total loss of Mass (%) | Onset of effect [°C] | Endset of effect [°C] | Left Limit [°C] | Right Limit [°C] | Energy [J/g] |
2.70 | 61.9 | 109.20 | 117.68 | 106.27 | 119.74 | 2.76 (endothermic) |
207.72 | 219.45 | 182.15 | 219.45 | -91.58 (exothermic) |
SECOND EXPERIMENT
During the heating up phase endothermic signals were observed in the temperature range of approx. 108 – 170 °C. During the cooling down phase no thermal effects were observed from 205 to 25 °C.
Values of the DSC run in the Supplementary Test 1
Sample weight [mg] | Loss of Mass (%) | Temperature range [°C] | Observation |
2.75 | 1.1 | 25 – 120 | light, reddish brown powder |
Values of the DSC run in the Supplementary Test 2
Sample weight [mg] | Loss of Mass (%) | Temperature range [°C] | Observation |
2.29 | 5.2 | 25 – 140 | reddish brown powder |
Values of the DSC run in the Supplementary Test 3
Sample weight [mg] | Loss of Mass (%) | Temperature range [°C] | Observation |
2.83 | 6.4 | 25 – 180 | dark grey, clumped powder |
Values of the DSC run in the Supplementary Test 4
Sample weight [mg] | Loss of Mass (%) | Temperature range [°C] | Observation |
2.81 | 20.6 | 25 – 205 | black melt with shiny green surface; bubbles were visible in the melt |
APPEARANCE OF THE SAMPLE IN THE MAIN TEST
Before the test, the substance appeared as an orange powder. After the experiments the test item melted and blackened in the crucible.
Description of key information
Endothermic decomposition starts at 109.20 °C; exothermic decomposition starts before melting at ca. 180 °C.
Key value for chemical safety assessment
Additional information
OECD 102 and 113 - differential scanning calorimetry method
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