Registration Dossier
Registration Dossier
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EC number: 202-719-7 | CAS number: 98-98-6
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 07 - 18 Jul 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- yes
- Type of method:
- gas saturation method
Test material
- Reference substance name:
- Pyridine-2-carboxylic acid
- EC Number:
- 202-719-7
- EC Name:
- Pyridine-2-carboxylic acid
- Cas Number:
- 98-98-6
- Molecular formula:
- C6H5NO2
- IUPAC Name:
- pyridine-2-carboxylic acid
Constituent 1
Results and discussion
Vapour pressure
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.028 Pa
Any other information on results incl. tables
Test results are shown as follows. No peak was detected at the peak position of test item in the analysis of trap solvent in the second trap and the blank.
Test temperature (°C) |
Flow rate (mL/min) |
Vapor pressure (Pa) |
|
Measured value |
Average |
||
35 |
20 30 40 |
9.73E-2 1.01E-1 9.67E-2 |
9.83E-2 |
40 |
20 30 40 |
1.94E-1 1.70E-1 1.93E-1 |
1.85E-1 |
45 |
20 30 40 |
3.26E-1 3.15E-1 3.23E-1 |
3.21E-1 |
The regression equation and the vapor pressure are shown as follows:
Regression equation: log P (Pa) = -5039.49 x 1/T + 15.3511
Vapor pressure at 25 °C: 2.81E-2 Pa
It is considered that the carrier gas was sufficiently saturated with the test item at each flow rate because three measured values at each temperature were very near. It is also considered that the measured vapor pressure was well-correlated to the test temperature because the regression equation obtained by plotting the logarithm of vapor pressure (log P) versus the reciprocal number of test temperature (1/T) was a straight line. Therefore, it is concluded that the test results are acceptable.
Applicant's summary and conclusion
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