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Diss Factsheets
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EC number: 279-015-1 | CAS number: 78952-61-1
- 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:
- 2014-02-05 - 2014-02-10
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- 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:
- no
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Type of method:
- capillary method
- Remarks:
- and thermal analysis
- Decomposition:
- yes
- Decomp. temp.:
- > 230 °C
- Remarks on result:
- other: The test item has no melting point. The test item decomposed.
- Conclusions:
- The test item has no melting point. The test item decomposed.
Reference
The DSC-measurement in a closed glass crucible with the test item showed multistage exothermal effects in the temperature range 150 – 335 °C with an energy release of 391 J/g.
Two measurements with the test itemshowed a broad endothermal effect in the temperature range 135 to 185 °C and 130 – 200 °C, respectively.
Two exothermal effects were detectedin the temperature range 235 – 375 °C with an energy release of 244 J/g (1st measurement) and 220 J/g (2nd measurement), respectively, and in the temperature range 380 – 450 °C with an energy release of 11 J/g (1st measurement) and 8 J/g (2nd measurement), respectively. About 2/3 of the weight of the test item remained in the crucible after the measurement.
Additional measurements with the capillary method were performed in order to clarify the broad endothermal effect of the DSC measurements in the temperature range of 135 – 185 °C, which may be attributed to evaporation of the water content of the test item (8.8 wt.-% H2O content according to the certificate of analysis).
No. | Set point | Heating rate | End point | Melting point/range | Remarks |
1 | 50 °C | 10 K/min | 230 °C | Not detected | Starting at approx. 106 °C some liquid distilled off, and condensed at the cold part of the capillary outside the heating block. The solid material remained unchanged without melting up to approx. 230 °C. |
1 | 50 °C | 10 K/min | 230 °C | Not detected | Starting at approx. 105 °C some liquid distilled off, and condensed at the cold part of the capillary outside the heating block. The solid material remained unchanged without melting up to approx. 230 °C. |
Thus it was concluded, that the test item showed no melting. The test item decomposed.
Description of key information
Substance decomposes prior to melting
Key value for chemical safety assessment
Additional information
No melting point determined up to 500 °C. Substance decomposes before melting.
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