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EC number: 295-033-2 | CAS number: 91782-61-5
- 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:
- 2009-07-30 to 2009-08-27
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same 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
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Atm. press.:
- 1 016 hPa
- Decomposition:
- yes
- Decomp. temp.:
- ca. 400 °C
- Conclusions:
- The test item, cobalt boron propionate, starts to decompose at approximately 400 °C.
Reference
Thermal stability:
The DSC measurement (measured at 1016 hPa) in a closed glass crucible with the test item showed an endothermic effect in the temperature range 300 °C to 405 °C. Directly after the endothermic effect an exothermic effect in the temperature range 405 to 460 °C with energy of 217 J/g has been observed. An optical inspection showed a discoloration of the test item from purple to black. However the test item was still a powder after the measurement.
Melting point/Melting Range:
The first measurement in aluminium crucible (at 1016 hPa) with a hole showed multiple endothermic effects in the temperature range of 310 – 450 °C. No further effect was observed up to a temperature of 600 °C. An optical inspection of the test item showed a discolouration from purple to black. However the test item was still a powder.
An additional measurement with the capillary method was performed in order to clarify the results of the DSC measurements.
Due to the optical inspection and the result of the DSC measurement it can be concluded that the test item has no melting point at atmospheric condition up to the maximum temperature of measurements (600, 500 and 400 °C, respectively).
Due to the results of the capillary measurement (no changes up to 400 °C) and the DSC measurement in a closed glass crucible (changes at 405 °C resulting in a discoloration of the test item from purple to black) it can be concluded that the test item starts to decompose at approximately 400 °C.
Description of key information
No melting point can be stated. Cobalt, borate propionate complexes decomposes before melting. Temperature of decomposition: approx. 400 °C.
Key value for chemical safety assessment
Additional information
The melting point of the test substance was determined according to OECD guideline 102 with the differential scanning calorimetry method (DSC). The test item was heated up from ambient to the final temperature (600 °C) at a constant heating rate (10 K/min) in a defined atmosphere (nitrogen). The quantity of heat absorbed or released was measured and recorded. Aluminium crucibles with a small hole were used as containers for the test item and as empty reference crucible.
A measurement in a capillary tube in a metal block was used to clarify the results from the DSC-measurement. The maximum temperature of this equipment is limited to 400 °C. Set point and maximum temperature were chosen according to the results of the DSC measurements.
The results of the optical inspection of the DSC measurements and the result of the capillary measurement showed that cobalt, borate propionate complexes has no melting point at atmospheric condition up to the maximum temperature of the measurements. The results of the capillary measurement and the DSC measurement in a closed glass crucible showed that cobalt, borate propionate complexes starts to decompose at approx. 400 °C.
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