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EC number: 237-855-6 | CAS number: 14024-48-7
- 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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- >= 170 - <= 180 °C
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 3 (not reliable)
- Rationale for reliability incl. deficiencies:
- unsuitable test system
- Remarks:
- Michelin analysis proved that these results are not correct (see endpoint study record "Melting point-Michelin-Thermal analysis").
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Remarks:
- No incident, which could have affected the quality or the interpretation of the results obtained, was observed.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- >= 115.8 - <= 116.8 °C
- Atm. press.:
- 101.325 kPa
- Decomposition:
- no
- Sublimation:
- no
Referenceopen allclose all
Description of key information
The report edited by Defitrace indicates a melting point of 116 °C for this substance.
We contest the conclusions of this study as melting point is defined in TGA-DSC as an endothermic peak without weight variation.
We conducted TGA measurements to follow weight losses of the product as function of temperature. DSC measurements were then performed to characterize potential thermal phenomena.
Near 100 °C, losses due to water vaporisation are observed. Then important losses between 150 and 370 °C without significant thermal exchanges are probably due to product decomposition (loss of organic matter). At 750 °C, the residue is about 13 % meaning that there was also no complete vaporisation of the product but mainly a degradation and loss of the organic matter.
Key value for chemical safety assessment
Additional information
Discussion:
- Phenomenon considered as Melting point by Defitrace: endothermic peak at 116 °C under Argon (DSC).
We observed the phenomenon near 100 °C. It is associated in ATGcurves to a weight loss of about 15 % (water). This matches the chemical composition of the substance: Peconal H is a dehydrated molecule that contains about 11 % water.
There is no melting of cobalt acetylacetonate at 116 °C.
An endothermic peak is observed near 180 °C without weight variation. It could correspond to a melting point (DH = 197 J/g).Under air, we could see the melting of the substance by this temperature, followed by an apparent oxidation (browning).
Under nitrogen, an important weight loss was observed in the DSC curve above 200 °C without significant thermal exchanges, which confirms product degradation from this temperature. The degradation goes on until more than 400 °C.
At 750 °C, the residue is about 13 % meaning that there was also no complete vaporisation of the product but mainly a degradation and loss of the organic matter.
Conclusions:
The endothermic phenomenon near 116 °C does not correspond to product melting but to “water of constitution” vaporisation.
The presence of an endothermic peak near 180 °C/ 190 °C could be interpreted as melting of the substance. Degradation of the product seems to begin near 200 °C.
No boiling point was identified.
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