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EC number: - | CAS number: 37486-69-4
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- November 1, 2010 - November 15, 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study, method not recommended
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- method not recommended for substances of this nature
- Deviations:
- yes
- Remarks:
- method not recommended for substances of this nature
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- method not recommended for substances of this nature
- Deviations:
- yes
- Remarks:
- method not recommended for substances of this nature
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 113 (1981) Screening test for thermal stability and stability in air.
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- dynamic method
Test material
- Details on test material:
- Name of test material (as cited in study report: TFEE-5
- Physical state: liquid
- Lot/batch no.: TFEE5-276/12/09-1
- Expiration date of the lot/batch: 31 December 2012
- Storage condition of test material: Room temperature in the dark under nitrogen
Constituent 1
Results and discussion
Vapour pressure
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.02 hPa
Transition / decomposition
- Key result
- Transition / decomposition:
- no
Any other information on results incl. tables
Temperature-Vapour pressure equilibria were measured at increasing and decreasing temperatures.
Results are given in the Table.
Table, Vapour pressure of TFEE-5 as a function of temperature |
|
Temperature (°C) |
Vapour pressure (hPa) |
104.0 |
9.0 |
135.3 |
51.0 |
151.6 |
101.0 |
163.0 |
150.7 |
182.7 |
301.7 |
199.0 |
502.1 |
211.8 |
700.8 |
221.0 |
900.0 |
203.4 |
600.5 |
192.3 |
401.4 |
171.3 |
202.0 |
147.0 |
80.6 |
Results were plotted as 1/T (K) v. log VP (Fig. 2). Temperature-vapour pressure equilibria lie along the same line whether measured at increasing or decreasing temperatures, indicating that volatile components were not driven off during the increasing temperature phase of the test. The parameterized Antoine equation is:
log VP (hPa) = 8.12184 - (2161.94/[200 + T (°C)]), R-sq = 0.998
Extrapolated vapour pressures:
20 °C: 0.020 hPa
25 °C: 0.033 hPa
50 °C: 0.30 hPa
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of TFEE-5 at 20 °C is 0.020 hPa
- Executive summary:
The vapour pressure of TFEE-5 was measured using a dynamic method according to EC No. 440/2008.A.4 and OECD TG104. The experimental apparatus was assembled from commercially-available components and calibrated regularly using n-Heptane and Hexadecane. Equilibrium data were analyzed using the Antoine relationship. The parameterized Antoine equation is log VP (hPa) = 8.12184 - (2161.94/[200 + T (°C)]) (R-sq = 0.998). The vapour pressure of TFEE-5 at 20 °C is 0.020 hPa.
The study was performed under GLP criteria and in accord with procedures detailed in internationally-accepted guidelines for the dynamic method. However, the dynamic method is not recommended for substances with VP less than 10 hPa. Therefore, the study is classified as reliable with restrictions.
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