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EC number: 231-913-4 | CAS number: 7778-77-0
- 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:
- Between 30 September 2009 and 24 October 2009.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- .
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Date of GLP inspection: 2009-09-15 Date of Signature on GLP certificate: 2009-11-26
- Type of method:
- differential scanning calorimetry
- Key result
- Boiling pt.:
- > 723 K
- Atm. press.:
- 101 325 Pa
- Conclusions:
- The test material was determined to have a boiling temperature greater than 723 K. Although the test material was identified as undergoing loss of volatiles from approximately 473 K, this thermal event was not associated with a phase transition (i.e. melting, boiling) of the test material.
This study is considered to satisfy the guideline requirements for this endpoint and is therefore acceptable for use as a key study. - Executive summary:
Method
The determination was carried out by differential scanning calorimetry (DSC) using the procedure specified in ASTM E537-86, Method A2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008.
Conclusion
The test material was determined to have a boiling temperature greater than 723 K. Although the test material was identified as undergoing loss of volatiles from approximately 473 K, this thermal event was not associated with a phase transition (i.e. melting, boiling) of the test material.
Reference
Results
Thermographic data for Determinations 1 and 2 are shown below.
Thermographic Data – Determination 1
Thermal Event |
Interpretation |
Temperature |
|
ºC |
K |
||
Endotherm |
Loss of volatiles |
~200 |
~473 |
Thermographic Data – Determination 2
Thermal Event |
Interpretation |
Temperature |
|
ºC |
K |
||
Endotherm |
Loss of volatiles |
~200 |
~473 |
The thermograms for determinations 1 to 3 can be seen in Attachment 1
Discussion
Identical thermographic profiles were obtained for the screening test under both air and nitrogen atmospheres. However, as possible loss of volatiles was to be investigated by a cyclic heating program, nitrogen was used as the furnace atmosphere for the additional test as it ensured the absence of ambient moisture which may have been reabsorbed by the sample on cooling.
For the additional test determination, the presence of the endotherm during heating step 1, but its absence during reheating of the sample confirmed that the endothermic event seen in the definitive test was attributable to loss of volatiles of the sample.
Additionally, the change in sample appearance during the tests has been attributed to the test material partially dissolving in the volatile material released on heating, and not due to a phase transition (e.g. melting, boiling) of the test material.
Description of key information
One key study (Walker J, 2009) exists. This study is performed in accordance with an acceptable guideline and under the conditions of GLP.
Key value for chemical safety assessment
Additional information
The test material was determined to have a boiling temperature greater than 723 K. Although the test material was identified as undergoing loss of volatiles from approximately 473 K, this thermal event was not associated with a phase transition (i.e. melting, boiling) of the test material.
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