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EC number: 241-782-5 | CAS number: 17814-85-6
- 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
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Boiling point
Administrative data
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 18 May - 25 May 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 020
- Report date:
- 2020
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Remarks:
- further measurement by photocell detection
Test material
- Reference substance name:
- (4-carboxybutyl)triphenylphosphonium bromide
- EC Number:
- 241-782-5
- EC Name:
- (4-carboxybutyl)triphenylphosphonium bromide
- Cas Number:
- 17814-85-6
- Molecular formula:
- C23H24BrO2P
- IUPAC Name:
- (4-carboxybutyl)triphenylphosphonium bromide
- Test material form:
- solid: crystalline
Constituent 1
Results and discussion
Boiling point
- Key result
- Boiling pt.:
- >= 324.7 - <= 327.4 °C
- Atm. press.:
- >= 1 019.3 - <= 1 021.5 hPa
- Decomposition:
- ambiguous
- Decomp. temp.:
- ca. 280 °C
Any other information on results incl. tables
Results
DSC measurements and Photo cell detection method
In the temperature range of 190 - 220 °C an edothermic effect was seen. Between 280 - 370 °C a second endothermic effect could be seen.
Results of DSC
Sample weight / mg |
Onset of effect / °C |
Range of effect / °C |
Weight loss / mg |
Atmospheric pressure / hPa |
8.76 |
203.82 324.89 |
190 – 220 (endo) 280 – 370 (endo) |
8.72 |
1019.3 |
9.29 |
203.83 327.75 |
190 – 220 (endo) 280 – 370 (endo) |
9.24 |
1021.5 |
During the heating phase a distinct endothermic effect was
observed in the temperature range of 190 – 220 °C.
The test item showed a second endothermic signal in the temperature
range of 280 – 370 °C.
No further thermal effects were observed up to the test end temperature
of 500 °C.
The photo cell detection method was performed to clearly
assign the endothermic effects to melting or boiling, respectively. The
test item was molten at the start temperature of 210 °C. At approx. 290
°C small bubbles occured which rised at approx. 290 °C. At 313.9 °C the
rising bubbles reached a frequency of 0.6. No coloring of the molten
test item was observed during the measurement.
Thus, the photo cell detection method confirmes that the
first endothermic effect can be assigned to melting of the test item and
the second endothermic effect can be assigned to a gas evolution. Hence,
from the point of view of this study, the second endothermic effect can
be assigned to a boiling of the test item. However, due to the boiling
point determination results of the chemical similar substances TMP (CAS
1779 -49 -3) and MMC (CAS 4009 -98 -7) it is not unlikely, that the
second endothermic effect is a decomposition effect with a gas
evolution. Additionally, the study 'Self-heating solids in the Grewer
Oven of the test item CBT' shows an endothermic effect at approx. 280 °C
and a colored residue was left in the basket. This also indicates a
chemical reaction instead of boiling in the temperature range of the
second endothermic effect.
For the correction of the boiling temperature to normal
pressure the test item was assigned to chemical group 7 (e.g. Butyric
acid). Therefore a correction value φ = 6.4 was used for the temperature
range from 320 °C to 330 °C.
The lowest measured onset temperature is corrected to the normal
pressure to be 324.65 °C and the highest onset temperature to be 327.42
°C. As the corrected onset temperatures in both tests deviate by more
than 0.5 K from their mean value of 326.04 °C, the test item has a
boiling range from 324.7 °C to 327.4 °C.
Applicant's summary and conclusion
- Conclusions:
- The test item CBT has either a boiling point range of 324.7 °C to 327.4 °C at normal pressure (1013 hPa) or it decomposes under gas evolution starting at approx. 280 °C as determined by
Differential Scanning Calorimetry and confirmed by the photo cell detection method according to Regulation (EC) No 440/2008 Method A.2. and OECD Test Guideline 103 (1995).
Further studies are needed to clearly distinct between a boiling or a decomposition of the test item at these temperatures.
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