Registration Dossier
Registration Dossier
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EC number: 265-019-0 | CAS number: 64690-19-3
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Experimental starting date: 09 April 2018, Experimental completion date: 12 April 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 guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
Test material
- Reference substance name:
- N-octylpyridin-4-amine
- EC Number:
- 265-019-0
- EC Name:
- N-octylpyridin-4-amine
- Cas Number:
- 64690-19-3
- Molecular formula:
- C13H22N2
- IUPAC Name:
- N-octylpyridin-4-amine
Constituent 1
Results and discussion
Vapour pressure
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.004 Pa
Any other information on results incl. tables
Discussion
The test item did not change in appearance under the conditions used in the determination.
No statistical analyses were performed because the balance readings were too low and variable for a line of best fit to have any meaning. Instead it was considered more appropriate to impose a regression slope on a chosen data point to provide an estimate of the maximum value for the vapor pressure at 25 ºC.
Run 10 was chosen because the sample had been under vacuum for the longest period prior to this run and so degassing would have been the most complete. The reading at 33 ºC (306.15 K) was chosen because this is the data point which gives the highest estimated vapor pressure at any given temperature when a slope of –1000 K is imposed upon it. The value of –1000 K is an in-house value and is the shallowest slope observed whilst determining the vapor pressure on a wide range of samples using the vapor pressure balance method. Extrapolation to 25 ºC gave a vapor pressure of 3.62 x 10-3 Pa which has been taken as a maximum for this material.
Conclusion
The vapor pressure of the test item has been determined to be less than 3.7 x 10-3 Pa at 25 ºC.
Applicant's summary and conclusion
- Conclusions:
- The vapor pressure of the test item has been determined to be less than 3.7 x 10-3 Pa at 25 ºC.
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