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Diss Factsheets
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EC number: 619-020-1 | CAS number: 94361-06-5
- 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
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:
- 19 Jan 2000 to 06 Mar 2000
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Version / remarks:
- Jul 1995
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- Dec1992
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
- Version / remarks:
- Aug 1996
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Key result
- Atm. press.:
- 99.3 kPa
- Decomposition:
- yes
- Decomp. temp.:
- 299 °C
- Conclusions:
- Due to the thermal decomposition of the test substance it was not possible to determine the boiling point under normal pressure. Thermal decomposition starts at 299 °C before boiling point is reached, and oxidative decomposition starts at about 115 °C .
- Executive summary:
The boiling temperature of the test substance was assessed according to OECD TG 103, EC Method A.2 and EPA OPPTS Guideline 830.7220 and in compliance with GLP. The test substance started to decompose at 299 °C, before the boiling point is reached. In air, weak oxidative decomposition was observed to start at around 115 °C. Therefore, determination of the boiling point is not possible.
Reference
RESULTS
The following investigations of the boiling behaviour of the test substance were carried out.
- The first investigation, using a heating rate of 10.0 °C / minute and starting at 140.0 °C, was discontinued at 360 °C. At 250 °C there had been no change observed in the sample. At 310 °C the sample had become somewhat more yellow and gas bubbles were visible. At 360 °C the sample was aerated and, due to the many gas bubbles present, appeared cloudy.
- A second investigation was then performed, using a heating rate of 20.0 °C / minute and starting at 240.0 °C. At 370 °C the investigation was discontinued: a light yellow discoloration was observed along 'With the aeration and apparent cloudiness.
- A third investigation, which used a heating rate of 10.0 °C / minute and started at 200.0 °C was discontinued at 370 °C. A yellow discoloration was observed along with the typical aeration and apparent cloudiness.
- A fourth and final investigation was then carried out, using a heating rate of 10.0 °C/ min, starting at 240.0 °C. At 310 °C the first gas bubbles were visible. At 320 °C the sample appeared cloudy and aerated. This investigation was then discontinued.
These observations strongly suggested that the substance decomposed before the boiling point could be reached.
In order to interpret these observations with the test substance, additional investigations were performed using DSC.
Finally, a second control determination of the boiling point of toluene was then performed using the same conditions as before. A boiling point of 110.3 °C was again determined. Using the measured atmospheric pressure, 99.3 kPa, the temperature correction factors given in the OECD TG 103, the Sidney-Young number-value-equation, and the boiling point of toluene at standard pressure, it was possible to calculate the corrected boiling point, 109.9 °C, of toluene at the measured atmospheric pressure. The experimentally determined average boiling point of toluene, 110.3 °C, agreed with this calculated, corrected value.
In order to interpret the observations made, additional investigations were performed under GLP, using DSC, by the testing facility. A Perkin Elmer 7 Series Thermal Analysis System was used. The thermal behaviour of the test substance was investigated, not only in air, but also under a nitrogen atmosphere, using a heating rate of 10.0 °C/ minute and starting from 25.0 °C. Under nitrogen, decomposition was observed to commence at about 230 °C, becoming distinct at about 291 °C. In air, however, a weak oxidation occurred in the temperature range 115 °C to 279 °C, with a peak maximum at 233 °C. Subsequently, thermal decomposition commenced at about 299 °C. Therefore, the initial decomposition is oxidative in nature. In neither curve was any evidence of boiling observed.
Description of key information
The test substance started to decomposed thermally at about 300 °C, prior to reaching the boiling. In air, weak oxidative decomposition started at around 115 °C. Hence, no boiling point could be determined. OECD TG 103, Das 2000.
Key value for chemical safety assessment
- Temperature of decomposition (state purity):
- 299 °C
Additional information
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