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EC number: 481-870-2 | CAS number: -
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Testing was conducted between 03 April 2007 and 27 April 2007.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted to GLP and in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do no effect the quality of the relevant results.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
Results and discussion
Vapour pressure
- Temp.:
- 25 °C
- Vapour pressure:
- < 0 Pa
Any other information on results incl. tables
Results
Run 1
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (µg) |
Mass Difference (kg) |
Vapour Pressure (Pa) |
Log10 Vp |
240 |
513.15 |
0.001948748 |
1.55 |
1.550E-09 |
0.002151797 |
-2.667198681 |
241 |
514.15 |
0.001944958 |
1.38 |
1.380E-09 |
0.001915794 |
-2.717651292 |
242 |
515.15 |
0.001941182 |
0.16 |
1.600E-10 |
0.000222121 |
-3.653410396 |
243 |
516.15 |
0.001937421 |
0.81 |
8.100E-10 |
0.001124488 |
-2.949045360 |
244 |
517.15 |
0.001933675 |
-0.73 |
-7.300E-10 |
- |
- |
245 |
518.15 |
0.001929943 |
2.77 |
2.770E-09 |
0.003845470 |
-2.415050610 |
246 |
519.15 |
0.001926226 |
0.65 |
6.500E-10 |
0.000902367 |
-3.044617022 |
247 |
520.15 |
0.001922522 |
0.49 |
4.900E-10 |
0.000680246 |
-3.167334299 |
248 |
521.15 |
0.001918833 |
1.46 |
1.460E-09 |
0.002026854 |
-2.693177523 |
249 |
522.15 |
0.001915158 |
0.73 |
7.300E-10 |
0.001013427 |
-2.994207519 |
250 |
523.15 |
0.001911498 |
0.08 |
8.000E-11 |
0.000111060 |
-3.954440392 |
No statistical analysis is given due to the nature of the plot
Run 2
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (µg) |
Mass Difference (kg) |
Vapour Pressure (Pa) |
Log10 Vp |
240 |
513.15 |
0.001948748 |
1.22 |
1.220E-09 |
0.001693673 |
-2.771170548 |
241 |
514.15 |
0.001944958 |
-0.08 |
-8.000E-11 |
- |
- |
242 |
515.15 |
0.001941182 |
1.30 |
1.300E-09 |
0.001804733 |
-2.743587026 |
243 |
516.15 |
0.001937421 |
1.55 |
1.550E-09 |
0.002151797 |
-2.667198681 |
244 |
517.15 |
0.001933675 |
-0.49 |
-4.900E-10 |
- |
- |
245 |
518.15 |
0.001929943 |
4.56 |
4.560E-09 |
0.006330448 |
-2.198565536 |
246 |
519.15 |
0.001926226 |
0.57 |
5.700E-10 |
0.000791306 |
-3.101655523 |
247 |
520.15 |
0.001922522 |
-0.33 |
-3.300E-10 |
- |
- |
248 |
521.15 |
0.001918833 |
0.57 |
5.700E-10 |
0.000791306 |
-3.101655523 |
249 |
522.15 |
0.001915158 |
-0.49 |
-4.900E-10 |
- |
- |
250 |
523.15 |
0.001911498 |
2.52 |
2.520E-09 |
0.003498406 |
-2.456129838 |
No statistical analysis is given due to the nature of the plot
Run 3
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (µg) |
Mass Difference (kg) |
Vapour Pressure (Pa) |
Log10 Vp |
240 |
513.15 |
0.001948748 |
1.14 |
1.140E-09 |
0.001582612 |
-2.800625527 |
241 |
514.15 |
0.001944958 |
0.08 |
8.000E-11 |
0.000111060 |
-3.954440392 |
242 |
515.15 |
0.001941182 |
-0.08 |
-8.000E-11 |
- |
- |
243 |
516.15 |
0.001937421 |
1.06 |
1.060E-09 |
0.001471552 |
-2.832224513 |
244 |
517.15 |
0.001933675 |
0.41 |
4.100E-10 |
0.000569185 |
-3.244746522 |
245 |
518.15 |
0.001929943 |
1.87 |
1.870E-09 |
0.002596039 |
-2.585688772 |
246 |
519.15 |
0.001926226 |
0.33 |
3.300E-10 |
0.000458125 |
-3.339016439 |
247 |
520.15 |
0.001922522 |
0.41 |
4.100E-10 |
0.000569185 |
-3.244746522 |
248 |
521.15 |
0.001918833 |
0.73 |
7.300E-10 |
0.001013427 |
-2.994207519 |
249 |
522.15 |
0.001915158 |
2.03 |
2.030E-09 |
0.002818160 |
-2.550034341 |
250 |
523.15 |
0.001911498 |
0.33 |
3.300E-10 |
0.000458125 |
-3.339016439 |
No statistical analysis is given due to the nature of the plot
Run 4
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (µg) |
Mass Difference (kg) |
Vapour Pressure (Pa) |
Log10 Vp |
240 |
513.15 |
0.001948748 |
-0.73 |
-7.300E-10 |
- |
- |
241 |
514.15 |
0.001944958 |
-0.08 |
-8.000E-11 |
- |
- |
242 |
515.15 |
0.001941182 |
-0.57 |
-5.700E-10 |
- |
- |
243 |
516.15 |
0.001937421 |
3.01 |
3.010E-09 |
0.004178651 |
-2.378963883 |
244 |
517.15 |
0.001933675 |
0.08 |
8.000E-11 |
0.000111060 |
-3.954440392 |
245 |
518.15 |
0.001929943 |
0.24 |
2.400E-10 |
0.000333181 |
-3.477319137 |
246 |
519.15 |
0.001926226 |
1.87 |
1.870E-09 |
0.002596039 |
-2.585688772 |
247 |
520.15 |
0.001922522 |
1.71 |
1.710E-09 |
0.002373918 |
-2.624534268 |
248 |
521.15 |
0.001918833 |
0.90 |
9.000E-10 |
0.001249431 |
-2.903287869 |
249 |
522.15 |
0.001915158 |
1.46 |
1.460E-09 |
0.002026854 |
-2.693177523 |
250 |
523.15 |
0.001911498 |
0.57 |
5.700E-10 |
0.000791306 |
-3.101655523 |
No statistical analysis is given due to the nature of the plot
Run 5
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (µg) |
Mass Difference (kg) |
Vapour Pressure (Pa) |
Log10 Vp |
240 |
513.15 |
0.001948748 |
0.08 |
8.000E-11 |
0.000111060 |
-3.954440392 |
241 |
514.15 |
0.001944958 |
1.22 |
1.220E-09 |
0.001693673 |
-2.771170548 |
242 |
515.15 |
0.001941182 |
0.00 |
0.000E+00 |
- |
- |
243 |
516.15 |
0.001937421 |
1.06 |
1.060E-09 |
0.001471552 |
-2.832224513 |
244 |
517.15 |
0.001933675 |
1.63 |
1.630E-09 |
0.002262858 |
-2.645342774 |
245 |
518.15 |
0.001929943 |
-0.08 |
-8.000E-11 |
- |
- |
246 |
519.15 |
0.001926226 |
1.55 |
1.550E-09 |
0.002151797 |
-2.667198681 |
247 |
520.15 |
0.001922522 |
0.98 |
9.800E-10 |
0.001360491 |
-2.866304303 |
248 |
521.15 |
0.001918833 |
-0.08 |
-8.000E-11 |
- |
- |
249 |
522.15 |
0.001915158 |
0.00 |
0.000E+00 |
- |
- |
250 |
523.15 |
0.001911498 |
0.33 |
3.300E-10 |
0.000458125 |
-3.339016439 |
No statistical analysis is given due to the nature of the plot
Discussion
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 vapour pressure at 25ºC.
Run 5 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 244ºC (517.15 K) was chosen because this is the data point which gives the highest estimated vapour pressure at any given temperature when a slope of -1500 K is imposed upon it.
The value of -1500 K is an in-house value and is the shallowest slope observed whilst determining the vapour pressure on a wide range of samples using the vapour pressure balance method. Extrapolation to 25ºC gave a vapour pressure of 1.676 x 10-5 Pa which has been taken as a maximum for this material.
The test material did not change in appearance under the conditions used in the determination.
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of the test material has been determined to be less than 1.7 x 10-5 Pa at 25ºC
- Executive summary:
The vapour pressure was determined for substance CM-5 in project number 0345 -0925 using a vapour pressure balance with measurements being made at several temperatures and linear regression analysis used to calculate the vapour pressure at 25°C. Testing was conducted using Method A4 of Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC), and Method 104 specified in the OECD Guidelines for Testing of Chemicals, 25 March 2006. The vapour pressure of the test material has been determined to be less than 1.7 x 10-5 Pa at 25ºC.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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