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Diss Factsheets
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EC number: 600-034-1 | CAS number: 1001417-33-9
- 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 2017
- 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:
- other: ASTM E537-07
- Deviations:
- no
- GLP compliance:
- no
- Other quality assurance:
- other: ISO 9001
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- >= 250 °C
- Decomposition:
- yes
- Decomp. temp.:
- 250 °C
- Conclusions:
- The melting point of Zirconium, dimethyl[[2,2'''-[1,3-propanediylbis(oxy-κO)]bis[3'',5,5''-tris(1,1-dimethylethyl)-5'-methyl[1,1':3',1''-terphenyl]-2'-olato-κO]](2-)]-, (OC-6-33)- was determined according to EC Regulation No 440/2008, Guideline A.1 [1] and according to OECD Guideline 102 [2], and in accordance with European Chemicals Agency (ECHA), Guidance on information requirements and chemical safety assessment, Chapter R.7a, Endpoint specific guidance, May 2008 [3].
The melting point was determined using thermal analysis (DSC).
The test substance did not melt before the decomposition, which start at 250 °C. - Executive summary:
The test substance did not melt before the decomposition, which start at 250 °C.
Reference
Based on DSC measurement 1 (see attached DSC), no sharp melting point was obtained during the heating up to 400°C. Since the first endotherm has an enthalpy of 17 J/g, this is most likely no melting point. A well-defined melting enthalpy has an enthalpy of ≥ 100 J/g.
To confirm the absence of a melting point as measured in measurement 1, a second DSC measurement was performed with subsequent heating/cooling ramps (see attached DSC heat-cool).
After the first endothermic effect, the sample was cooled from 160°C to 25°C, but no crystallization peak was observed. No further crystallization / melting effects were obtained in the subsequent heating/cooling ramps.
Finally a heating ramp to 400°C was performed, where the exothermic and second endothermic effect were observed, comparable with the first measurement.
Description of key information
The test substance did not melt before the decomposition, which start at 250 °C.
Key value for chemical safety assessment
Additional information
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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