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EC number: 249-528-5 | CAS number: 29232-93-7
- 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
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 17 Sep 2014 to 31 Oct 2014
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Version / remarks:
- 27 Jul 1995
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- 30 May 2008
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Atm. press.:
- >= 101 - <= 101.5 kPa
- Decomposition:
- yes
- Decomp. temp.:
- 162 °C
- Conclusions:
- Due to thermal decomposition starting at about 162 °C, the boiling point cannot be determined for this substance.
- Executive summary:
The study was performed in accordance with OECD TG 103 and in compliance with GLP to evaluate the boiling temperature of the test substance. The test substance was determined to decompose from approximately 162 °C (435 K), at 101.0 to 101.5 kPa. Decomposition was observed both in air and under a nitrogen atmosphere. Therefore, due to thermal decomposition, the boiling point cannot be determined for this substance.
Reference
RESULTS:
The test substance was determined to decompose from approximately 162 °C (435 K), at 101.0 to 101.5 kPa. Decomposition was observed both in air and under a nitrogen atmosphere. Therefore, due to thermal decomposition, the boiling point cannot be determined for this substance.
From comparison of the thermogram profiles obtained from samples analysed using pre-perforated crucible lids (which allow self-pressurisation up to the boiling temperature) and those using manually pierced crucible lids (i.e. an open system), it is possible to evaluate if an observed endotherm originates from a true boiling temperature for the test substance. However in this case, it was possible to conclude from the exothermic response and remaining residue found for determination 1 that the test substance underwent decomposition on heating, with no evidence of boiling. Due to the eruption of the decomposition products from the sample crucible, which had potential to compromise / damage the DSC sensor, all additional determinations were terminated at a lower final temperature of 245 °C. This had no impact on the integrity of the study since the temperature range remained sufficient to allow quantification of the decomposition temperature from the exotherm onset, and decomposition was also further supported visually by the discoloration of the test substance residue remaining on completion of each determination. Due to the low initial rate of enthalpy change during decomposition, the onset temperature could only be approximated. The use of manually pierced crucibles (an open system) also provided an opportunity to assess the stability of the test substance in air and in an inert atmosphere (nitrogen). Decomposition was observed both in air and under a nitrogen atmosphere, indicating the process was most likely thermal and not oxidative.
Table 1 Thermographic data – determination 1
Thermal Event |
Interpretation |
Temperature |
|
ºC |
K |
||
Approximate exotherm onset temperature. |
Approximate decomposition onset temperature |
187.79 |
461 |
Extrapolated exotherm onset temperature. |
Extrapolated decomposition onset temperature |
237.43 |
511 |
Table 2 Thermographic data – determination 2
Thermal Event |
Interpretation |
Temperature |
|
ºC |
K |
||
Approximate exotherm onset temperature. |
Approximate decomposition onset temperature |
178.71 |
452 |
Extrapolated exotherm onset temperature. |
Extrapolated decomposition onset temperature |
234.99 |
508 |
Table 3 Thermographic data – determination 3
Thermal Event |
Interpretation |
Temperature |
|
ºC |
K |
||
Approximate exotherm onset temperature. |
Approximate decomposition onset temperature |
178.33 |
451 |
Extrapolated exotherm onset temperature. |
Extrapolated decomposition onset temperature |
224.89 |
498 |
Table 4 Thermographic data – determination 4
Thermal Event |
Interpretation |
Temperature |
|
ºC |
K |
||
Approximate exotherm onset temperature. |
Approximate decomposition onset temperature |
162.10 |
435 |
Extrapolated exotherm onset temperature. |
Extrapolated decomposition onset temperature |
219.99 |
493 |
Table 5 Thermographic data – determination 5
Thermal Event |
Interpretation |
Temperature |
|
ºC |
K |
||
Approximate exotherm onset temperature. |
Approximate decomposition onset temperature |
166.03 |
439 |
Extrapolated exotherm onset temperature. |
Extrapolated decomposition onset temperature |
217.69 |
491 |
Description of key information
The test substance decomposes before boiling from approximately 162 °C (99.2% pure), OECD TG 103, DSC, O'Connor 2014.
Key value for chemical safety assessment
- Temperature of decomposition (state purity):
- 162 °C
Additional information
Another study was performed to determine the boiling point of the test substance in technical material in accordance with OECD TG 102 and in compliance with GLP. Here the boiling point could also not be determined as significant decomposition was observed.
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