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EC number: 268-859-6 | CAS number: 68152-93-2
- 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
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Initiation: September 24, 2013 Completion May 20, 2014
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- Specifically: The Effusion Method – modified amalgamation of the Knudsen Cell and Isothermal Thermogravity Methods.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- other: modified amalgamation of the Knudsen Cell and Isothermal Thermogravity Methods.
- Key result
- Test no.:
- #1
- Temp.:
- 36.1 °C
- Remarks on result:
- not determinable
- Remarks:
- The evaporation rate was observed to be less than that of the hexadecane standard
- Key result
- Test no.:
- #2
- Temp.:
- 49.5 °C
- Remarks on result:
- not determinable
- Remarks:
- The evaporation rate was observed to be less than that of the hexadecane standard
- Key result
- Test no.:
- #3
- Temp.:
- 58.3 °C
- Remarks on result:
- not determinable
- Remarks:
- The evaporation rate was observed to be less than that of the hexadecane standard
- Conclusions:
- Based on the results of our test, we conclude that the vapour pressure of the test item is less than that of hexadecane or < 0.31 Pa at 25 °C, and <0.19 Pa at 20 °C.
- Executive summary:
The vapour pressure of test item tall oil, maleated, was determined according to OECD Guideline for the Testing of Chemicals. Test No. 104: Vapour Pressure. March 23, 2006. Specifically: The Effusion Method – modified amalgamation of the Knudsen Cell and Isothermal Thermogravity Methods.
The measurements were based on the Knudsen and Isothermal Effusion Methods, described in OECD Test No. 104 (Sections 26, 27, 32, 33 and 34). These methods reportedly have a useful range from 10E-10 to 1 Pa, however ISI has shown that a modified Knudsen cell can be usefully calibrated up to 70 kPa. The Effusion method is based on the loss of weight from the test item and is limited by the sensitivity of the balance and the temperature to which the cells can be heated. The Gas Saturation method, which also operates in the low Pa range, was not useable because of the difficulty in establishing an analytical method with a sufficiently low detection limit.
The adapted Knudsen Cell Effusion method employed a 20 mL glass vial fitted with a septum cap, punctured with a 26G needle. Eight vials were filled with samples and standards as follows: 2 vials with 5 grams of the test sample, 2 vials with 2 grams of naphthalene standard, 2 vials with 4 mL of the hexadecane standard and 2 vials empty (blanks). The vials were capped and placed in a vacuum oven under 20 inches of mercury until a significant weight loss was detectable in a naphthalene standard, typically 40 to 120 hours The weight loss was determined by gravimetry.
Two independent preparations of the test item were run at each temperature, along with blanks and standards.
Temperatures ranging from 36 to 58 °C were used. The temperature was monitored using a calibrated thermocouple with its probe placed inside a shallow steel dish which held the Knudsen cells, visible through the window. Calibration standards, blanks and at least two independent preparations of test item were run at three temperatures.
The results show that the test item gained approximately 1 mg in weight during the incubation under vacuum. This implies that there is no measurable vapour pressure under the conditions used.
The weight change was observed to be less than that of the reference standards naphthalene and hexadecane, of which hexadecane has the lowest vapour pressure.
In order to verify that the Knudsen cell and naphthalene calibration was operating normally, the vapour pressure of hexadecane was calculated and compared to literature values. The measured value at 58.3 °C, the only temperature at which a useable value was obtained, was found to be 103.3% of the expected. Based on this result we concluded that the analytical system was operating normally. The weight change in the blank cells over the course of the incubations was less than 1 mg, while the error in the analytical balance was <0.0002 g.
Based on the results of our test, we conclude that the vapour pressure of the test item is less than that of hexadecane or <0.31 Pa at 25 °C, and <0.19 Pa at 20 °C.
Reference
The results show that the test item gained approximately 1 mg in weight during the incubation under vacuum. This implies that there is no measurable vapour pressure under the conditions used.
The weight change was observed to be less than that of the reference standards naphthalene and hexadecane, of which hexadecane has the lowest vapour pressure.
In order to verify that the Knudsen cell and naphthalene calibration was operating normally, the vapour pressure of hexadecane was calculated and compared to literature values. The measured value at 58.3 °C, the only temperature at which a useable value was obtained, was found to be 103.3 % of the expected. Based on this result we concluded that the analytical system was operating normally. The weight change in the blank cells over the course of the incubations was less than 1 mg, while the error in the analytical balance was <0.0002 g.
Based on the results of our test, we conclude that the vapour pressure of the test item is less than that of hexadecane or <0.31 Pa at 25 ° C, and <0.19 Pa at 20 ° C.
Description of key information
The vapour pressure of the test item is less than that of hexadecane or <0.31 Pa at 25 °C, and <0.19 Pa at 20 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 0.19 Pa
- at the temperature of:
- 20 °C
Additional information
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