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Diss Factsheets
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EC number: 947-390-7 | CAS number: -
- 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:
- Experimental phase: December 2017.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- The study was conducted according to an internationally recognised method, with no deviation. The substance is considered to be adequately characterised. Therefore full validation applies.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Version / remarks:
- July, 27, 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- Regulation (EC) n°440/2008
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Storage Conditions: Ambient temperature in a dark place, in the original glass bottle.
- Key result
- Boiling pt.:
- ca. 275.4 °C
- Atm. press.:
- >= 100.8 - <= 100.9 kPa
- Boiling pt.:
- >= 120 - <= 500 °C
- Atm. press.:
- >= 100.8 - <= 100.9 kPa
- Decomposition:
- ambiguous
- Decomp. temp.:
- >= 350 °C
- Executive summary:
The boiling point of the test substance was determined according to OECD 103/EU A2 guidelines, DSC method.
Two runs were performed: a single endothermic peak was recorded for the boiling transition, covering a wide temperature range between ca 120 and 350°C. This is consistent with the UVCB nature of the substance. The endotherm was immediately followed by a heat flow deviation up to 500°C, but selective volatilisation and/or decomposition is unclear. Peak values of the endotherm were repeatable, so the mean result was retained as a representative value.
The boiling temperature of test substance has been determined to be ca 275.4°C.
Reference
A single endothermic signal was recorded for the transition.
The peak profiles are a little spread, this may be due to the UVCB nature of the substance, and/or the size of the hole in the commercial crucible top which generates a little evaporation before the boiling point. This leak does not impact the accuracy of the boiling point since it is determined at the peak maximum.
Immediately after boiling, a significant deviation of the heat flow is observed up to 500°C. For this UVCB substance, this DSC signal can be interpreted as:
- Decomposition of residue in the crucible (a preliminary assay up to 400 °C showed that the sample weight after boiling was still 30% of the loading mass, so in the main test, heating was continued up to 600°C)
or/and
- There is a boiling range between 120 and 500°C, with a shift of the baseline starting at 350°C which can be due to a change of the heat capacity between the initial substance and the residual heavy compounds after peak evaporation or degradation of heavy compounds of the sample.
Therefore, the end temperature of the boiling transition cannot be unequivocally assigned.
As an UVCB, a range is stated; however, given the classical peak profile, the peak value was also retained as representative. It should nevertheless be noted that this result may vary slightly with the substance composition.
Range of thermal event | Assay 1 | Assay 2 | Mean (+/- Standard Deviation) | |
Boiling point (°C) | Start T: 120°C End T: between 350 and 500°C, with possible decomposition |
275.51 |
275.27 |
275.39 +/- 0.17 |
The duplicate determinations are within the estimated accuracy of +/-0.5°C (according to the guidelines), therefore no additional measurement is required, and the average result is retained.
For each boiling point assay, the crucible is weighted before and after filling and after measurement to validate that all the sample is vaporized. For boiling point measurement, the weights of the crucibles are the same before filling and after measurement, the test item is totally evaporated during the measurement.
Description of key information
Boiling occurs between 120 and 500°C, with a representative value at peak ca 275.4°C. Above 350°C, selective volatilisation and/or decomposition is unclear.
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 275.4 °C
Additional information
A fully reliable experimental study, conducted according to a recognized OECD method, is available. Therefore it is considered as a key study, and the result is retained as key data.
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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