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Diss Factsheets
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EC number: 228-779-4 | CAS number: 6358-57-2
- 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 September 14th, 2017 to January 31st, 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Test Guideline 113: Thermal Stability
- Version / remarks:
- 1981
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Remarks:
- and capillary method
- Decomposition:
- yes
- Decomp. temp.:
- 210 °C
- Conclusions:
- The substance decomposes before melting (210 °C).
- Executive summary:
The thermal behaviour of test item was assessed using the DSC analysis, according to the OECD guideline 102 and OECD guideline 113. To verify the results of the DSC measurement, three additional measurements with the capillary method were performed in the temperature range of 25 – 400 °C with a heating rate of 10 K/min.
The test item has no melting/boiling point up to its decomposition starting at a temperature of approx. 210 °C as determined by differential scanning calorimetry and capillary method.
The test item showed an endothermic effect from 110 °C. A first exothermic effect was observed starting at 160 °C with an averaged energy release of -460 J/g. A second exothermic effect was detected starting from 430 °C with an energy release of more than -60 J/g. Because of the test end at 500 °C the second exothermic effect was not fully recorded and the associated energy release cannot be fully quantified.
Conclusion
The substance decomposes before melting (210 °C).
Reference
MELTING POINT - DSC method
The test item showed a broad endothermic effect starting at a temperature of ca 55 °C and an exothermic effect starting from 210 °C with an average energy release of -221 J/g and another endothermic effect starting at a temperature of 359 °C.
During the heating phase two broad endothermic effects were detected, which both cannot be clearly assigned to a melting or a boiling of the test item.
Results of DSC analysis
No. | Sample weight / mg | Onset of Effect / °C | Energy / (J/g) | Weight loss / mg | Atmospheric pressure / hPa |
1 | 14.38 | 79 | 103 | 5.68 | 1001 |
260 | -174 | ||||
359 | 193 | ||||
2 | 10.63 | 54 | 127 | 4.13 | 1001 |
210 | -268 | ||||
400 | 50 |
MELTING POINT - capillary method
According to the observations during the tests with the capillary method, the broad endothermic effect starting at 50 °C in the DSC measurements with open crucibles cannot be assigned to the melting of the test item, since the test item did not change its appearance. Since the test item contains 5.3 wt.-% water, it can be assumed, that the endothermic effect is caused by the drying of the test item. Starting at a temperature of approx. 290 °C the test item becomes black and starts to decompose. The decomposition was accomplished at a temperature of approx. 370 °C. Due to the fact that a sharp exothermic effect was observed in the DSC measurements starting at a temperature of approx. 250 °C, the effect cannot be associated with a melting or boiling. It can be stated that the test item has no melting point and no boiling point up to its decomposition.
THERMAL STABILITY
The test item showed an endothermic effect from 110 °C. A first exothermic effect was observed starting at 160 °C with an averaged energy release of -460 J/g. A second exothermic effect was detected starting from 430 °C with an energy release of more than -60 J/g. Because of the test end at 500 °C the second exothermic effect was not fully recorded and the associated energy release cannot be fully quantified.
No. | Sample weight / mg | Start of effect / °C | Energy / (J/g) |
1 | 7.48 | 110 | +8 (endothermic) |
160 | -370 (exothermic) | ||
430 | higher than -58 (exothermic) | ||
2 | 8.25 | 110 | +8 (endothermic) |
160 | -551 (exothermic) | ||
430 | higher than -63 (exothermic) |
Description of key information
The substance decomposes before melting (210 °C).
Key value for chemical safety assessment
Additional information
OECD 102 and OECD 113 - DSC analysis and capillary method
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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