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EC number: 617-365-2 | CAS number: 82597-69-1
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 05.01.2018 to 05.03.2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- This study was conducted in a facility operating to Good Laboratory Practice within the National GLP Compliance Monitoring Authority program, but the study report has not been audited by the Quality Assurance Unit.
- Type of method:
- gas saturation method
Test material
- Reference substance name:
- Potassium (1R,3R)-3-[(1Z)-2-chloro-3,3,3-trifluoroprop-1-en-1-yl]-2,2-dimethylcyclopropanecarboxylate and Potassium (1S,3S)-3-[(1Z)-2-chloro-3,3,3-trifluoroprop-1-en-1-yl]-2,2-dimethylcyclopropanecarboxylate
- Cas Number:
- 82597-69-1
- Molecular formula:
- C9 H10 Cl F3 O2 . K
- IUPAC Name:
- Potassium (1R,3R)-3-[(1Z)-2-chloro-3,3,3-trifluoroprop-1-en-1-yl]-2,2-dimethylcyclopropanecarboxylate and Potassium (1S,3S)-3-[(1Z)-2-chloro-3,3,3-trifluoroprop-1-en-1-yl]-2,2-dimethylcyclopropanecarboxylate
- Test material form:
- solid
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- < 0 Pa
- Temp.:
- 25 °C
- Vapour pressure:
- < 0 Pa
Any other information on results incl. tables
Experimental results:
Collection time: 18185 min
Temperature: 25.1 °C
The vapour pressure is calculated through the equation:
p = (WRT)/(VM)
where:
p = vapour pressure (Pa)
W = mass of evaporated test substance (g)
V = volume of saturated gas (m3)
R = universal gas constant 8.314 (J mol-1 K-1)
T = temperature (K)
M = molar mass of test substance (g mol-1).
| Gas flow rate (mL/min) | Volume N2 (m3) | amount collected in 1st trap (µg) | amount collected in 2nd trap (µg) | W: total ammount collected (µg) | Vapour pressure (Pa) |
| 19.23 | 0.350 | 0.00 | 0.00 | 0.00 | < 10 x 10e-6 |
| 26.56 | 0.483 | 0.00 | 0.00 | 0.00 | < 7.4 x 10e-6 |
| 37.55 | 0.683 | 0.00 | 0.00 | 0.00 | < 5.3 x 10e-6 |
Because no substance was detected in the condensation tubes, the upper limit for the vapour pressure was determined using the lowest check calibration concentration (0.192 mg/L). This correspond to an absolute amount of 0.384 ug of the corresponding carboxylic acid (M = 242.6 g mol-1), and to an amount of 0.444 ug of the potassium salt (M = 280.7 g mol-1)
This value was used in the calculations of the Vapour pressures specified in the above table.
Since no substance was detected during the experiment at 25 °C, then the vapour pressure at 25 °C must be < 10 x 10e-6 Pa.
Therefore, the vapour pressure at 20 °C must be < 10 x 10e-6 Pa.
Recovery test: A recovery test was performed at two concentration levels and was determined to be 78.3 and 88.1 % (0.5 mL each aliquots from two independently prepared solutions of concentration 0.403 μg/mL and 4.052 μg/mL, respectively were transferred into individual condenser tubes. After the solvent was removed, by passing a gentle stream of nitrogen gas, the substrate was extracted with the mobile phase.).
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of the test item has been determined using the gas saturation method to be:
< 10 x 10e-6 Pa at 20 °C
< 10 x 10e-6 Pa at 25 °C
Because no substance was detected in the condensation tubes, the upper limit for the vapour pressure was determined using the lowest check calibration concentration. - Executive summary:
The vapour pressure of the test item has been determined using the gas saturation method to be:
< 10 x 10e-6 Pa at 20 °C
< 10 x 10e-6 Pa at 25 °C
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